From 0553afbacbcfc448b81b3c3c27474e12312bc09d Mon Sep 17 00:00:00 2001
From: Costin Leau <costin.leau@gmail.com>
Date: Sun, 8 Jul 2018 14:57:49 +0300
Subject: [PATCH 1/3] SQL: Support for escape sequences

Enhance grammar to allow JDBC/ODBC escape sequences, namely
- date, time and timestamp {d ''}, {t ''} and {ts ''}
- guid {guid ''}
- LIKE escape {escape ''}
- scalar function {fn }

Fix #31883
---
 x-pack/plugin/sql/src/main/antlr/SqlBase.g4   |   62 +-
 .../plugin/sql/src/main/antlr/SqlBase.tokens  |   96 +-
 .../sql/src/main/antlr/SqlBaseLexer.tokens    |   94 +-
 .../xpack/sql/parser/ExpressionBuilder.java   |  167 +-
 .../xpack/sql/parser/LogicalPlanBuilder.java  |   11 +-
 .../xpack/sql/parser/SqlBaseBaseListener.java |  153 +-
 .../xpack/sql/parser/SqlBaseBaseVisitor.java  |   91 +-
 .../xpack/sql/parser/SqlBaseLexer.java        |  598 ++--
 .../xpack/sql/parser/SqlBaseListener.java     |  141 +-
 .../xpack/sql/parser/SqlBaseParser.java       | 2542 +++++++++++------
 .../xpack/sql/parser/SqlBaseVisitor.java      |   85 +-
 .../xpack/sql/parser/SqlParser.java           |   19 +-
 .../sql/parser/EscapedFunctionsTests.java     |  225 ++
 13 files changed, 2909 insertions(+), 1375 deletions(-)
 create mode 100644 x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/EscapedFunctionsTests.java

diff --git a/x-pack/plugin/sql/src/main/antlr/SqlBase.g4 b/x-pack/plugin/sql/src/main/antlr/SqlBase.g4
index ea0b7da161c1e..2c3288babd6d8 100644
--- a/x-pack/plugin/sql/src/main/antlr/SqlBase.g4
+++ b/x-pack/plugin/sql/src/main/antlr/SqlBase.g4
@@ -74,9 +74,14 @@ queryNoWith
     : queryTerm
     /** we could add sort by - sort per partition */
       (ORDER BY orderBy (',' orderBy)*)?
-      (LIMIT limit=(INTEGER_VALUE | ALL))?
+      limitClause?
     ;
 
+limitClause
+    : LIMIT limit=(INTEGER_VALUE | ALL)                                                                   
+    | LIMIT_ESC limit=(INTEGER_VALUE | ALL) ESC_END                                              
+    ;
+    
 queryTerm
     : querySpecification                   #queryPrimaryDefault
     | '(' queryNoWith  ')'                 #subquery
@@ -185,7 +190,12 @@ predicate
     ;
 
 pattern
-    : value=string (ESCAPE escape=string)?
+    : value=string patternEscape?
+    ;
+    
+patternEscape
+    : ESCAPE escape=string
+    | ESCAPE_ESC escape=string '}'
     ;
 
 valueExpression
@@ -197,18 +207,44 @@ valueExpression
     ;
 
 primaryExpression
-    : CAST '(' expression AS dataType ')'                                            #cast
-    | EXTRACT '(' field=identifier FROM valueExpression ')'                          #extract
+    : castExpression                                                                 #cast
+    | extractExpression                                                              #extract
     | constant                                                                       #constantDefault
     | ASTERISK                                                                       #star
     | (qualifiedName DOT)? ASTERISK                                                  #star
-    | identifier '(' (setQuantifier? expression (',' expression)*)? ')'              #functionCall
+    | functionExpression                                                             #function
     | '(' query ')'                                                                  #subqueryExpression
     | identifier                                                                     #columnReference
     | qualifiedName                                                                  #dereference
     | '(' expression ')'                                                             #parenthesizedExpression
     ;
 
+castExpression
+    : castTemplate                                                                   
+    | FUNCTION_ESC castTemplate ESC_END                                              
+    ;
+    
+castTemplate
+    : CAST '(' expression AS dataType ')'
+    ;
+    
+extractExpression
+    : extractTemplate
+    | FUNCTION_ESC extractTemplate ESC_END
+    ;
+    
+extractTemplate
+    : EXTRACT '(' field=identifier FROM valueExpression ')'
+    ;
+
+functionExpression
+    : functionTemplate
+    | FUNCTION_ESC functionTemplate '}'
+    ;
+    
+functionTemplate
+    : identifier '(' (setQuantifier? expression (',' expression)*)? ')'
+    ;
     
 constant
     : NULL                                                                                     #nullLiteral
@@ -216,6 +252,10 @@ constant
     | booleanValue                                                                             #booleanLiteral
     | STRING+                                                                                  #stringLiteral
     | PARAM                                                                                    #paramLiteral
+    | DATE_ESC string ESC_END                                                                  #dateEscapedLiteral
+    | TIME_ESC string ESC_END                                                                  #timeEscapedLiteral
+    | TIMESTAMP_ESC string ESC_END                                                             #timestampEscapedLiteral
+    | GUID_ESC string ESC_END                                                                  #guidEscapedLiteral
     ;
 
 comparisonOperator
@@ -351,6 +391,18 @@ VERIFY: 'VERIFY';
 WHERE: 'WHERE';
 WITH: 'WITH';
 
+// Escaped Sequence
+ESCAPE_ESC: '{ESCAPE';
+FUNCTION_ESC: '{FN';
+LIMIT_ESC:'{LIMIT';
+DATE_ESC: '{D';
+TIME_ESC: '{T';
+TIMESTAMP_ESC: '{TS';
+// mapped to string literal
+GUID_ESC: '{GUID';
+
+ESC_END: '}';
+
 EQ  : '=';
 NEQ : '<>' | '!=' | '<=>';
 LT  : '<';
diff --git a/x-pack/plugin/sql/src/main/antlr/SqlBase.tokens b/x-pack/plugin/sql/src/main/antlr/SqlBase.tokens
index 87cf9a4809d4a..527cc676e1d80 100644
--- a/x-pack/plugin/sql/src/main/antlr/SqlBase.tokens
+++ b/x-pack/plugin/sql/src/main/antlr/SqlBase.tokens
@@ -69,33 +69,41 @@ USING=68
 VERIFY=69
 WHERE=70
 WITH=71
-EQ=72
-NEQ=73
-LT=74
-LTE=75
-GT=76
-GTE=77
-PLUS=78
-MINUS=79
-ASTERISK=80
-SLASH=81
-PERCENT=82
-CONCAT=83
-DOT=84
-PARAM=85
-STRING=86
-INTEGER_VALUE=87
-DECIMAL_VALUE=88
-IDENTIFIER=89
-DIGIT_IDENTIFIER=90
-TABLE_IDENTIFIER=91
-QUOTED_IDENTIFIER=92
-BACKQUOTED_IDENTIFIER=93
-SIMPLE_COMMENT=94
-BRACKETED_COMMENT=95
-WS=96
-UNRECOGNIZED=97
-DELIMITER=98
+ESCAPE_ESC=72
+FUNCTION_ESC=73
+LIMIT_ESC=74
+DATE_ESC=75
+TIME_ESC=76
+TIMESTAMP_ESC=77
+GUID_ESC=78
+ESC_END=79
+EQ=80
+NEQ=81
+LT=82
+LTE=83
+GT=84
+GTE=85
+PLUS=86
+MINUS=87
+ASTERISK=88
+SLASH=89
+PERCENT=90
+CONCAT=91
+DOT=92
+PARAM=93
+STRING=94
+INTEGER_VALUE=95
+DECIMAL_VALUE=96
+IDENTIFIER=97
+DIGIT_IDENTIFIER=98
+TABLE_IDENTIFIER=99
+QUOTED_IDENTIFIER=100
+BACKQUOTED_IDENTIFIER=101
+SIMPLE_COMMENT=102
+BRACKETED_COMMENT=103
+WS=104
+UNRECOGNIZED=105
+DELIMITER=106
 '('=1
 ')'=2
 ','=3
@@ -167,16 +175,24 @@ DELIMITER=98
 'VERIFY'=69
 'WHERE'=70
 'WITH'=71
-'='=72
-'<'=74
-'<='=75
-'>'=76
-'>='=77
-'+'=78
-'-'=79
-'*'=80
-'/'=81
-'%'=82
-'||'=83
-'.'=84
-'?'=85
+'{ESCAPE'=72
+'{FN'=73
+'{LIMIT'=74
+'{D'=75
+'{T'=76
+'{TS'=77
+'{GUID'=78
+'}'=79
+'='=80
+'<'=82
+'<='=83
+'>'=84
+'>='=85
+'+'=86
+'-'=87
+'*'=88
+'/'=89
+'%'=90
+'||'=91
+'.'=92
+'?'=93
diff --git a/x-pack/plugin/sql/src/main/antlr/SqlBaseLexer.tokens b/x-pack/plugin/sql/src/main/antlr/SqlBaseLexer.tokens
index a687a9215ecb5..155d4860e0ea0 100644
--- a/x-pack/plugin/sql/src/main/antlr/SqlBaseLexer.tokens
+++ b/x-pack/plugin/sql/src/main/antlr/SqlBaseLexer.tokens
@@ -69,32 +69,40 @@ USING=68
 VERIFY=69
 WHERE=70
 WITH=71
-EQ=72
-NEQ=73
-LT=74
-LTE=75
-GT=76
-GTE=77
-PLUS=78
-MINUS=79
-ASTERISK=80
-SLASH=81
-PERCENT=82
-CONCAT=83
-DOT=84
-PARAM=85
-STRING=86
-INTEGER_VALUE=87
-DECIMAL_VALUE=88
-IDENTIFIER=89
-DIGIT_IDENTIFIER=90
-TABLE_IDENTIFIER=91
-QUOTED_IDENTIFIER=92
-BACKQUOTED_IDENTIFIER=93
-SIMPLE_COMMENT=94
-BRACKETED_COMMENT=95
-WS=96
-UNRECOGNIZED=97
+ESCAPE_ESC=72
+FUNCTION_ESC=73
+LIMIT_ESC=74
+DATE_ESC=75
+TIME_ESC=76
+TIMESTAMP_ESC=77
+GUID_ESC=78
+ESC_END=79
+EQ=80
+NEQ=81
+LT=82
+LTE=83
+GT=84
+GTE=85
+PLUS=86
+MINUS=87
+ASTERISK=88
+SLASH=89
+PERCENT=90
+CONCAT=91
+DOT=92
+PARAM=93
+STRING=94
+INTEGER_VALUE=95
+DECIMAL_VALUE=96
+IDENTIFIER=97
+DIGIT_IDENTIFIER=98
+TABLE_IDENTIFIER=99
+QUOTED_IDENTIFIER=100
+BACKQUOTED_IDENTIFIER=101
+SIMPLE_COMMENT=102
+BRACKETED_COMMENT=103
+WS=104
+UNRECOGNIZED=105
 '('=1
 ')'=2
 ','=3
@@ -166,16 +174,24 @@ UNRECOGNIZED=97
 'VERIFY'=69
 'WHERE'=70
 'WITH'=71
-'='=72
-'<'=74
-'<='=75
-'>'=76
-'>='=77
-'+'=78
-'-'=79
-'*'=80
-'/'=81
-'%'=82
-'||'=83
-'.'=84
-'?'=85
+'{ESCAPE'=72
+'{FN'=73
+'{LIMIT'=74
+'{D'=75
+'{T'=76
+'{TS'=77
+'{GUID'=78
+'}'=79
+'='=80
+'<'=82
+'<='=83
+'>'=84
+'>='=85
+'+'=86
+'-'=87
+'*'=88
+'/'=89
+'%'=90
+'||'=91
+'.'=92
+'?'=93
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
index 35eb76af67c7b..825f4ce1f70fa 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
@@ -20,6 +20,7 @@
 import org.elasticsearch.xpack.sql.expression.ScalarSubquery;
 import org.elasticsearch.xpack.sql.expression.UnresolvedAttribute;
 import org.elasticsearch.xpack.sql.expression.UnresolvedStar;
+import org.elasticsearch.xpack.sql.expression.function.Function;
 import org.elasticsearch.xpack.sql.expression.function.UnresolvedFunction;
 import org.elasticsearch.xpack.sql.expression.function.scalar.Cast;
 import org.elasticsearch.xpack.sql.expression.function.scalar.arithmetic.Add;
@@ -48,14 +49,19 @@
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ArithmeticBinaryContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ArithmeticUnaryContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.BooleanLiteralContext;
-import org.elasticsearch.xpack.sql.parser.SqlBaseParser.CastContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.CastExpressionContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.CastTemplateContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ColumnReferenceContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ComparisonContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.DateEscapedLiteralContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.DecimalLiteralContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.DereferenceContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ExistsContext;
-import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ExtractContext;
-import org.elasticsearch.xpack.sql.parser.SqlBaseParser.FunctionCallContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ExtractExpressionContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ExtractTemplateContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.FunctionExpressionContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.FunctionTemplateContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.GuidEscapedLiteralContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.IntegerLiteralContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.LogicalBinaryContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.LogicalNotContext;
@@ -66,6 +72,7 @@
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ParamLiteralContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.ParenthesizedExpressionContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.PatternContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.PatternEscapeContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.PredicateContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.PredicatedContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.PrimitiveDataTypeContext;
@@ -76,10 +83,16 @@
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.StringLiteralContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.StringQueryContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.SubqueryExpressionContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.TimeEscapedLiteralContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.TimestampEscapedLiteralContext;
 import org.elasticsearch.xpack.sql.proto.SqlTypedParamValue;
 import org.elasticsearch.xpack.sql.tree.Location;
 import org.elasticsearch.xpack.sql.type.DataType;
 import org.elasticsearch.xpack.sql.type.DataTypes;
+import org.joda.time.DateTime;
+import org.joda.time.format.DateTimeFormatter;
+import org.joda.time.format.DateTimeFormatterBuilder;
+import org.joda.time.format.ISODateTimeFormat;
 
 import java.math.BigDecimal;
 import java.util.List;
@@ -222,17 +235,18 @@ public LikePattern visitPattern(PatternContext ctx) {
         }
 
         char escape = 0;
-        String escapeString = string(ctx.escape);
+        PatternEscapeContext escapeCtx = ctx.patternEscape();
+        String escapeString = string(escapeCtx != null ? escapeCtx.escape : null);
 
         if (Strings.hasText(escapeString)) {
             // shouldn't happen but adding validation in case the string parsing gets wonky
             if (escapeString.length() > 1) {
-                throw new ParsingException(source(ctx.escape), "A character not a string required for escaping; found [{}]", escapeString);
+                throw new ParsingException(source(escapeCtx), "A character not a string required for escaping; found [{}]", escapeString);
             } else if (escapeString.length() == 1) {
                 escape = escapeString.charAt(0);
                 // these chars already have a meaning
                 if (escape == '*' || escape == '%' || escape == '_') {
-                    throw new ParsingException(source(ctx.escape), "Char [{}] cannot be used for escaping", escape);
+                    throw new ParsingException(source(escapeCtx.escape), "Char [{}] cannot be used for escaping", escape);
                 }
                 // lastly validate that escape chars (if present) are followed by special chars
                 for (int i = 0; i < pattern.length(); i++) {
@@ -324,11 +338,6 @@ public Order visitOrderBy(OrderByContext ctx) {
             ctx.DESC() != null ? Order.OrderDirection.DESC : Order.OrderDirection.ASC);
     }
 
-    @Override
-    public Object visitCast(CastContext ctx) {
-        return new Cast(source(ctx), expression(ctx.expression()), typedParsing(ctx.dataType(), DataType.class));
-    }
-
     @Override
     public DataType visitPrimitiveDataType(PrimitiveDataTypeContext ctx) {
         String type = visitIdentifier(ctx.identifier()).toLowerCase(Locale.ROOT);
@@ -367,20 +376,32 @@ public DataType visitPrimitiveDataType(PrimitiveDataTypeContext ctx) {
         }
     }
 
+    //
+    // Functions template
+    //
     @Override
-    public Object visitFunctionCall(FunctionCallContext ctx) {
-        String name = visitIdentifier(ctx.identifier());
-        boolean isDistinct = ctx.setQuantifier() != null && ctx.setQuantifier().DISTINCT() != null;
-        UnresolvedFunction.ResolutionType resolutionType =
-                isDistinct ? UnresolvedFunction.ResolutionType.DISTINCT : UnresolvedFunction.ResolutionType.STANDARD;
-        return new UnresolvedFunction(source(ctx), name, resolutionType, expressions(ctx.expression()));
+    public Cast visitCastExpression(CastExpressionContext ctx) {
+        CastTemplateContext ctc = ctx.castTemplate();
+        return new Cast(source(ctc), expression(ctc.expression()), typedParsing(ctc.dataType(), DataType.class));
     }
 
     @Override
-    public Object visitExtract(ExtractContext ctx) {
-        String fieldString = visitIdentifier(ctx.field);
-        return new UnresolvedFunction(source(ctx), fieldString,
-                UnresolvedFunction.ResolutionType.EXTRACT, singletonList(expression(ctx.valueExpression())));
+    public Function visitExtractExpression(ExtractExpressionContext ctx) {
+        ExtractTemplateContext template = ctx.extractTemplate();
+        String fieldString = visitIdentifier(template.field);
+        return new UnresolvedFunction(source(template), fieldString,
+                UnresolvedFunction.ResolutionType.EXTRACT, singletonList(expression(template.valueExpression())));
+    }
+
+    @Override
+    public Function visitFunctionExpression(FunctionExpressionContext ctx) {
+        FunctionTemplateContext template = ctx.functionTemplate();
+
+        String name = visitIdentifier(template.identifier());
+        boolean isDistinct = template.setQuantifier() != null && template.setQuantifier().DISTINCT() != null;
+        UnresolvedFunction.ResolutionType resolutionType =
+                isDistinct ? UnresolvedFunction.ResolutionType.DISTINCT : UnresolvedFunction.ResolutionType.STANDARD;
+        return new UnresolvedFunction(source(ctx), name, resolutionType, expressions(template.expression()));
     }
 
     @Override
@@ -445,12 +466,12 @@ public Expression visitStringLiteral(StringLiteralContext ctx) {
     }
 
     @Override
-    public Object visitDecimalLiteral(DecimalLiteralContext ctx) {
+    public Literal visitDecimalLiteral(DecimalLiteralContext ctx) {
         return new Literal(source(ctx), new BigDecimal(ctx.getText()).doubleValue(), DataType.DOUBLE);
     }
 
     @Override
-    public Object visitIntegerLiteral(IntegerLiteralContext ctx) {
+    public Literal visitIntegerLiteral(IntegerLiteralContext ctx) {
         BigDecimal bigD = new BigDecimal(ctx.getText());
 
         long value = bigD.longValueExact();
@@ -463,7 +484,7 @@ public Object visitIntegerLiteral(IntegerLiteralContext ctx) {
     }
 
     @Override
-    public Object visitParamLiteral(ParamLiteralContext ctx) {
+    public Literal visitParamLiteral(ParamLiteralContext ctx) {
         SqlTypedParamValue param = param(ctx.PARAM());
         Location loc = source(ctx);
         if (param.value == null) {
@@ -522,4 +543,100 @@ private SqlTypedParamValue param(TerminalNode node) {
 
         return params.get(token);
     }
-}
+
+    @Override
+    public Literal visitDateEscapedLiteral(DateEscapedLiteralContext ctx) {
+        String string = string(ctx.string());
+        Location loc = source(ctx);
+        // parse yyyy-MM-dd
+        DateTime dt = null;
+        try {
+            dt = ISODateTimeFormat.date().parseDateTime(string);
+        } catch(IllegalArgumentException ex) {
+            throw new ParsingException(loc, "Invalid date received; {}", ex.getMessage());
+        }
+        return new Literal(loc, dt, DataType.DATE);
+    }
+
+    @Override
+    public Literal visitTimeEscapedLiteral(TimeEscapedLiteralContext ctx) {
+        String string = string(ctx.string());
+        Location loc = source(ctx);
+
+        // parse HH:mm:ss
+        DateTime dt = null;
+        try {
+            dt = ISODateTimeFormat.hourMinuteSecond().parseDateTime(string);
+        } catch (IllegalArgumentException ex) {
+            throw new ParsingException(loc, "Invalid time received; {}", ex.getMessage());
+        }
+
+        throw new SqlIllegalArgumentException("Time (only) literals are not supported; a date component is required as well");
+    }
+
+    @Override
+    public Literal visitTimestampEscapedLiteral(TimestampEscapedLiteralContext ctx) {
+        String string = string(ctx.string());
+
+        Location loc = source(ctx);
+        // parse yyyy-mm-dd hh:mm:ss(.f...)
+        DateTime dt = null;
+        try {
+            DateTimeFormatter formatter = new DateTimeFormatterBuilder()
+                    .append(ISODateTimeFormat.date())
+                    .appendLiteral(" ")
+                    .append(ISODateTimeFormat.hourMinuteSecondFraction())
+                    .toFormatter();
+            dt = formatter.parseDateTime(string);
+        } catch (IllegalArgumentException ex) {
+            throw new ParsingException(loc, "Invalid timestamp received; {}", ex.getMessage());
+        }
+        return new Literal(loc, dt, DataType.DATE);
+    }
+
+    @Override
+    public Literal visitGuidEscapedLiteral(GuidEscapedLiteralContext ctx) {
+        String string = string(ctx.string());
+
+        Location loc = source(ctx.string());
+        // basic validation
+        String lowerCase = string.toLowerCase(Locale.ROOT);
+        // needs to be format nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnnn
+        // since the length is fixed, the validation happens on absolute values
+        // not pretty but it's fast and doesn't create any extra objects
+
+        String errorPrefix = "Invalid GUID, ";
+
+        if (lowerCase.length() != 36) {
+            throw new ParsingException(loc, "{}too {}", errorPrefix, lowerCase.length() > 36 ? "long" : "short");
+        }
+
+        int[] separatorPos = { 8, 13, 18, 23 };
+        for (int pos : separatorPos) {
+            if (lowerCase.charAt(pos) != '-') {
+                throw new ParsingException(loc, "{}expected group separator at offset [{}], found [{}]",
+                        errorPrefix, pos, lowerCase.charAt(pos));
+            }
+        }
+
+        String HEXA = "0123456789abcdef";
+
+        for (int i = 0; i < lowerCase.length(); i++) {
+            // skip separators
+            boolean inspect = true;
+            for (int pos : separatorPos) {
+                if (i == pos) {
+                    inspect = false;
+                    break;
+                } else if (pos > i) {
+                    break;
+                }
+            }
+            if (inspect && HEXA.indexOf(lowerCase.charAt(i)) < 0) {
+                throw new ParsingException(loc, "{}expected hexadecimal at offset[{}], found [{}]", errorPrefix, i, lowerCase.charAt(i));
+            }
+        }
+
+        return new Literal(source(ctx), string, DataType.KEYWORD);
+    }
+}
\ No newline at end of file
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/LogicalPlanBuilder.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/LogicalPlanBuilder.java
index 3435994a0fc42..58d858c42415a 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/LogicalPlanBuilder.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/LogicalPlanBuilder.java
@@ -19,6 +19,7 @@
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.JoinCriteriaContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.JoinRelationContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.JoinTypeContext;
+import org.elasticsearch.xpack.sql.parser.SqlBaseParser.LimitClauseContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.NamedQueryContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.QueryContext;
 import org.elasticsearch.xpack.sql.parser.SqlBaseParser.QueryNoWithContext;
@@ -89,9 +90,13 @@ public LogicalPlan visitQueryNoWith(QueryNoWithContext ctx) {
             plan = new OrderBy(source(ctx.ORDER()), plan, visitList(ctx.orderBy(), Order.class));
         }
 
-        if (ctx.limit != null && ctx.INTEGER_VALUE() != null) {
-            plan = new Limit(source(ctx.limit), new Literal(source(ctx),
-                    Integer.parseInt(ctx.limit.getText()), DataType.INTEGER), plan);
+        LimitClauseContext limitClause = ctx.limitClause();
+        if (limitClause != null) {
+            Token limit = limitClause.limit;
+            if (limit != null && limitClause.INTEGER_VALUE() != null) {
+                plan = new Limit(source(limitClause), new Literal(source(limitClause),
+                        Integer.parseInt(limit.getText()), DataType.INTEGER), plan);
+            }
         }
 
         return plan;
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseBaseListener.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseBaseListener.java
index 4e80e8db9bb52..b353bcf6521f9 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseBaseListener.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseBaseListener.java
@@ -1,8 +1,3 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
 // ANTLR GENERATED CODE: DO NOT EDIT
 package org.elasticsearch.xpack.sql.parser;
 
@@ -208,6 +203,18 @@ class SqlBaseBaseListener implements SqlBaseListener {
    * <p>The default implementation does nothing.</p>
    */
   @Override public void exitQueryNoWith(SqlBaseParser.QueryNoWithContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterLimitClause(SqlBaseParser.LimitClauseContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitLimitClause(SqlBaseParser.LimitClauseContext ctx) { }
   /**
    * {@inheritDoc}
    *
@@ -556,6 +563,18 @@ class SqlBaseBaseListener implements SqlBaseListener {
    * <p>The default implementation does nothing.</p>
    */
   @Override public void exitPattern(SqlBaseParser.PatternContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterPatternEscape(SqlBaseParser.PatternEscapeContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitPatternEscape(SqlBaseParser.PatternEscapeContext ctx) { }
   /**
    * {@inheritDoc}
    *
@@ -657,13 +676,13 @@ class SqlBaseBaseListener implements SqlBaseListener {
    *
    * <p>The default implementation does nothing.</p>
    */
-  @Override public void enterFunctionCall(SqlBaseParser.FunctionCallContext ctx) { }
+  @Override public void enterFunction(SqlBaseParser.FunctionContext ctx) { }
   /**
    * {@inheritDoc}
    *
    * <p>The default implementation does nothing.</p>
    */
-  @Override public void exitFunctionCall(SqlBaseParser.FunctionCallContext ctx) { }
+  @Override public void exitFunction(SqlBaseParser.FunctionContext ctx) { }
   /**
    * {@inheritDoc}
    *
@@ -712,6 +731,78 @@ class SqlBaseBaseListener implements SqlBaseListener {
    * <p>The default implementation does nothing.</p>
    */
   @Override public void exitParenthesizedExpression(SqlBaseParser.ParenthesizedExpressionContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterCastExpression(SqlBaseParser.CastExpressionContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitCastExpression(SqlBaseParser.CastExpressionContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterCastTemplate(SqlBaseParser.CastTemplateContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitCastTemplate(SqlBaseParser.CastTemplateContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterExtractExpression(SqlBaseParser.ExtractExpressionContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitExtractExpression(SqlBaseParser.ExtractExpressionContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterExtractTemplate(SqlBaseParser.ExtractTemplateContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitExtractTemplate(SqlBaseParser.ExtractTemplateContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterFunctionExpression(SqlBaseParser.FunctionExpressionContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitFunctionExpression(SqlBaseParser.FunctionExpressionContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterFunctionTemplate(SqlBaseParser.FunctionTemplateContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitFunctionTemplate(SqlBaseParser.FunctionTemplateContext ctx) { }
   /**
    * {@inheritDoc}
    *
@@ -772,6 +863,54 @@ class SqlBaseBaseListener implements SqlBaseListener {
    * <p>The default implementation does nothing.</p>
    */
   @Override public void exitParamLiteral(SqlBaseParser.ParamLiteralContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterDateEscapedLiteral(SqlBaseParser.DateEscapedLiteralContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitDateEscapedLiteral(SqlBaseParser.DateEscapedLiteralContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterTimeEscapedLiteral(SqlBaseParser.TimeEscapedLiteralContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitTimeEscapedLiteral(SqlBaseParser.TimeEscapedLiteralContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterTimestampEscapedLiteral(SqlBaseParser.TimestampEscapedLiteralContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitTimestampEscapedLiteral(SqlBaseParser.TimestampEscapedLiteralContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void enterGuidEscapedLiteral(SqlBaseParser.GuidEscapedLiteralContext ctx) { }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation does nothing.</p>
+   */
+  @Override public void exitGuidEscapedLiteral(SqlBaseParser.GuidEscapedLiteralContext ctx) { }
   /**
    * {@inheritDoc}
    *
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseBaseVisitor.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseBaseVisitor.java
index 1adb0a423c7f2..d40ae6daa6e34 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseBaseVisitor.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseBaseVisitor.java
@@ -1,8 +1,3 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
 // ANTLR GENERATED CODE: DO NOT EDIT
 package org.elasticsearch.xpack.sql.parser;
 import org.antlr.v4.runtime.tree.AbstractParseTreeVisitor;
@@ -128,6 +123,13 @@ class SqlBaseBaseVisitor<T> extends AbstractParseTreeVisitor<T> implements SqlBa
    * {@link #visitChildren} on {@code ctx}.</p>
    */
   @Override public T visitQueryNoWith(SqlBaseParser.QueryNoWithContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitLimitClause(SqlBaseParser.LimitClauseContext ctx) { return visitChildren(ctx); }
   /**
    * {@inheritDoc}
    *
@@ -331,6 +333,13 @@ class SqlBaseBaseVisitor<T> extends AbstractParseTreeVisitor<T> implements SqlBa
    * {@link #visitChildren} on {@code ctx}.</p>
    */
   @Override public T visitPattern(SqlBaseParser.PatternContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitPatternEscape(SqlBaseParser.PatternEscapeContext ctx) { return visitChildren(ctx); }
   /**
    * {@inheritDoc}
    *
@@ -393,7 +402,7 @@ class SqlBaseBaseVisitor<T> extends AbstractParseTreeVisitor<T> implements SqlBa
    * <p>The default implementation returns the result of calling
    * {@link #visitChildren} on {@code ctx}.</p>
    */
-  @Override public T visitFunctionCall(SqlBaseParser.FunctionCallContext ctx) { return visitChildren(ctx); }
+  @Override public T visitFunction(SqlBaseParser.FunctionContext ctx) { return visitChildren(ctx); }
   /**
    * {@inheritDoc}
    *
@@ -422,6 +431,48 @@ class SqlBaseBaseVisitor<T> extends AbstractParseTreeVisitor<T> implements SqlBa
    * {@link #visitChildren} on {@code ctx}.</p>
    */
   @Override public T visitParenthesizedExpression(SqlBaseParser.ParenthesizedExpressionContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitCastExpression(SqlBaseParser.CastExpressionContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitCastTemplate(SqlBaseParser.CastTemplateContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitExtractExpression(SqlBaseParser.ExtractExpressionContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitExtractTemplate(SqlBaseParser.ExtractTemplateContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitFunctionExpression(SqlBaseParser.FunctionExpressionContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitFunctionTemplate(SqlBaseParser.FunctionTemplateContext ctx) { return visitChildren(ctx); }
   /**
    * {@inheritDoc}
    *
@@ -457,6 +508,34 @@ class SqlBaseBaseVisitor<T> extends AbstractParseTreeVisitor<T> implements SqlBa
    * {@link #visitChildren} on {@code ctx}.</p>
    */
   @Override public T visitParamLiteral(SqlBaseParser.ParamLiteralContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitDateEscapedLiteral(SqlBaseParser.DateEscapedLiteralContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitTimeEscapedLiteral(SqlBaseParser.TimeEscapedLiteralContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitTimestampEscapedLiteral(SqlBaseParser.TimestampEscapedLiteralContext ctx) { return visitChildren(ctx); }
+  /**
+   * {@inheritDoc}
+   *
+   * <p>The default implementation returns the result of calling
+   * {@link #visitChildren} on {@code ctx}.</p>
+   */
+  @Override public T visitGuidEscapedLiteral(SqlBaseParser.GuidEscapedLiteralContext ctx) { return visitChildren(ctx); }
   /**
    * {@inheritDoc}
    *
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseLexer.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseLexer.java
index c54c5e3810c8f..588f3ef028d6f 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseLexer.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseLexer.java
@@ -1,15 +1,13 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
 // ANTLR GENERATED CODE: DO NOT EDIT
 package org.elasticsearch.xpack.sql.parser;
 import org.antlr.v4.runtime.Lexer;
 import org.antlr.v4.runtime.CharStream;
+import org.antlr.v4.runtime.Token;
+import org.antlr.v4.runtime.TokenStream;
 import org.antlr.v4.runtime.*;
 import org.antlr.v4.runtime.atn.*;
 import org.antlr.v4.runtime.dfa.DFA;
+import org.antlr.v4.runtime.misc.*;
 
 @SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast"})
 class SqlBaseLexer extends Lexer {
@@ -28,11 +26,13 @@ class SqlBaseLexer extends Lexer {
     NOT=45, NULL=46, ON=47, OPTIMIZED=48, OR=49, ORDER=50, OUTER=51, PARSED=52, 
     PHYSICAL=53, PLAN=54, RIGHT=55, RLIKE=56, QUERY=57, SCHEMAS=58, SELECT=59, 
     SHOW=60, SYS=61, TABLE=62, TABLES=63, TEXT=64, TRUE=65, TYPE=66, TYPES=67, 
-    USING=68, VERIFY=69, WHERE=70, WITH=71, EQ=72, NEQ=73, LT=74, LTE=75, 
-    GT=76, GTE=77, PLUS=78, MINUS=79, ASTERISK=80, SLASH=81, PERCENT=82, CONCAT=83, 
-    DOT=84, PARAM=85, STRING=86, INTEGER_VALUE=87, DECIMAL_VALUE=88, IDENTIFIER=89, 
-    DIGIT_IDENTIFIER=90, TABLE_IDENTIFIER=91, QUOTED_IDENTIFIER=92, BACKQUOTED_IDENTIFIER=93, 
-    SIMPLE_COMMENT=94, BRACKETED_COMMENT=95, WS=96, UNRECOGNIZED=97;
+    USING=68, VERIFY=69, WHERE=70, WITH=71, ESCAPE_ESC=72, FUNCTION_ESC=73, 
+    LIMIT_ESC=74, DATE_ESC=75, TIME_ESC=76, TIMESTAMP_ESC=77, GUID_ESC=78, 
+    ESC_END=79, EQ=80, NEQ=81, LT=82, LTE=83, GT=84, GTE=85, PLUS=86, MINUS=87, 
+    ASTERISK=88, SLASH=89, PERCENT=90, CONCAT=91, DOT=92, PARAM=93, STRING=94, 
+    INTEGER_VALUE=95, DECIMAL_VALUE=96, IDENTIFIER=97, DIGIT_IDENTIFIER=98, 
+    TABLE_IDENTIFIER=99, QUOTED_IDENTIFIER=100, BACKQUOTED_IDENTIFIER=101, 
+    SIMPLE_COMMENT=102, BRACKETED_COMMENT=103, WS=104, UNRECOGNIZED=105;
   public static String[] modeNames = {
     "DEFAULT_MODE"
   };
@@ -46,12 +46,13 @@ class SqlBaseLexer extends Lexer {
     "LIMIT", "MAPPED", "MATCH", "NATURAL", "NOT", "NULL", "ON", "OPTIMIZED", 
     "OR", "ORDER", "OUTER", "PARSED", "PHYSICAL", "PLAN", "RIGHT", "RLIKE", 
     "QUERY", "SCHEMAS", "SELECT", "SHOW", "SYS", "TABLE", "TABLES", "TEXT", 
-    "TRUE", "TYPE", "TYPES", "USING", "VERIFY", "WHERE", "WITH", "EQ", "NEQ", 
-    "LT", "LTE", "GT", "GTE", "PLUS", "MINUS", "ASTERISK", "SLASH", "PERCENT", 
-    "CONCAT", "DOT", "PARAM", "STRING", "INTEGER_VALUE", "DECIMAL_VALUE", 
-    "IDENTIFIER", "DIGIT_IDENTIFIER", "TABLE_IDENTIFIER", "QUOTED_IDENTIFIER", 
-    "BACKQUOTED_IDENTIFIER", "EXPONENT", "DIGIT", "LETTER", "SIMPLE_COMMENT", 
-    "BRACKETED_COMMENT", "WS", "UNRECOGNIZED"
+    "TRUE", "TYPE", "TYPES", "USING", "VERIFY", "WHERE", "WITH", "ESCAPE_ESC", 
+    "FUNCTION_ESC", "LIMIT_ESC", "DATE_ESC", "TIME_ESC", "TIMESTAMP_ESC", 
+    "GUID_ESC", "ESC_END", "EQ", "NEQ", "LT", "LTE", "GT", "GTE", "PLUS", 
+    "MINUS", "ASTERISK", "SLASH", "PERCENT", "CONCAT", "DOT", "PARAM", "STRING", 
+    "INTEGER_VALUE", "DECIMAL_VALUE", "IDENTIFIER", "DIGIT_IDENTIFIER", "TABLE_IDENTIFIER", 
+    "QUOTED_IDENTIFIER", "BACKQUOTED_IDENTIFIER", "EXPONENT", "DIGIT", "LETTER", 
+    "SIMPLE_COMMENT", "BRACKETED_COMMENT", "WS", "UNRECOGNIZED"
   };
 
   private static final String[] _LITERAL_NAMES = {
@@ -65,8 +66,9 @@ class SqlBaseLexer extends Lexer {
     "'OR'", "'ORDER'", "'OUTER'", "'PARSED'", "'PHYSICAL'", "'PLAN'", "'RIGHT'", 
     "'RLIKE'", "'QUERY'", "'SCHEMAS'", "'SELECT'", "'SHOW'", "'SYS'", "'TABLE'", 
     "'TABLES'", "'TEXT'", "'TRUE'", "'TYPE'", "'TYPES'", "'USING'", "'VERIFY'", 
-    "'WHERE'", "'WITH'", "'='", null, "'<'", "'<='", "'>'", "'>='", "'+'", 
-    "'-'", "'*'", "'/'", "'%'", "'||'", "'.'", "'?'"
+    "'WHERE'", "'WITH'", "'{ESCAPE'", "'{FN'", "'{LIMIT'", "'{D'", "'{T'", 
+    "'{TS'", "'{GUID'", "'}'", "'='", null, "'<'", "'<='", "'>'", "'>='", 
+    "'+'", "'-'", "'*'", "'/'", "'%'", "'||'", "'.'", "'?'"
   };
   private static final String[] _SYMBOLIC_NAMES = {
     null, null, null, null, null, "ALL", "ANALYZE", "ANALYZED", "AND", "ANY", 
@@ -77,12 +79,13 @@ class SqlBaseLexer extends Lexer {
     "LIMIT", "MAPPED", "MATCH", "NATURAL", "NOT", "NULL", "ON", "OPTIMIZED", 
     "OR", "ORDER", "OUTER", "PARSED", "PHYSICAL", "PLAN", "RIGHT", "RLIKE", 
     "QUERY", "SCHEMAS", "SELECT", "SHOW", "SYS", "TABLE", "TABLES", "TEXT", 
-    "TRUE", "TYPE", "TYPES", "USING", "VERIFY", "WHERE", "WITH", "EQ", "NEQ", 
-    "LT", "LTE", "GT", "GTE", "PLUS", "MINUS", "ASTERISK", "SLASH", "PERCENT", 
-    "CONCAT", "DOT", "PARAM", "STRING", "INTEGER_VALUE", "DECIMAL_VALUE", 
-    "IDENTIFIER", "DIGIT_IDENTIFIER", "TABLE_IDENTIFIER", "QUOTED_IDENTIFIER", 
-    "BACKQUOTED_IDENTIFIER", "SIMPLE_COMMENT", "BRACKETED_COMMENT", "WS", 
-    "UNRECOGNIZED"
+    "TRUE", "TYPE", "TYPES", "USING", "VERIFY", "WHERE", "WITH", "ESCAPE_ESC", 
+    "FUNCTION_ESC", "LIMIT_ESC", "DATE_ESC", "TIME_ESC", "TIMESTAMP_ESC", 
+    "GUID_ESC", "ESC_END", "EQ", "NEQ", "LT", "LTE", "GT", "GTE", "PLUS", 
+    "MINUS", "ASTERISK", "SLASH", "PERCENT", "CONCAT", "DOT", "PARAM", "STRING", 
+    "INTEGER_VALUE", "DECIMAL_VALUE", "IDENTIFIER", "DIGIT_IDENTIFIER", "TABLE_IDENTIFIER", 
+    "QUOTED_IDENTIFIER", "BACKQUOTED_IDENTIFIER", "SIMPLE_COMMENT", "BRACKETED_COMMENT", 
+    "WS", "UNRECOGNIZED"
   };
   public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
 
@@ -139,7 +142,7 @@ public SqlBaseLexer(CharStream input) {
   public ATN getATN() { return _ATN; }
 
   public static final String _serializedATN =
-    "\3\u0430\ud6d1\u8206\uad2d\u4417\uaef1\u8d80\uaadd\2c\u033b\b\1\4\2\t"+
+    "\3\u0430\ud6d1\u8206\uad2d\u4417\uaef1\u8d80\uaadd\2k\u0370\b\1\4\2\t"+
     "\2\4\3\t\3\4\4\t\4\4\5\t\5\4\6\t\6\4\7\t\7\4\b\t\b\4\t\t\t\4\n\t\n\4\13"+
     "\t\13\4\f\t\f\4\r\t\r\4\16\t\16\4\17\t\17\4\20\t\20\4\21\t\21\4\22\t\22"+
     "\4\23\t\23\4\24\t\24\4\25\t\25\4\26\t\26\4\27\t\27\4\30\t\30\4\31\t\31"+
@@ -150,276 +153,293 @@ public SqlBaseLexer(CharStream input) {
     "\4>\t>\4?\t?\4@\t@\4A\tA\4B\tB\4C\tC\4D\tD\4E\tE\4F\tF\4G\tG\4H\tH\4I"+
     "\tI\4J\tJ\4K\tK\4L\tL\4M\tM\4N\tN\4O\tO\4P\tP\4Q\tQ\4R\tR\4S\tS\4T\tT"+
     "\4U\tU\4V\tV\4W\tW\4X\tX\4Y\tY\4Z\tZ\4[\t[\4\\\t\\\4]\t]\4^\t^\4_\t_\4"+
-    "`\t`\4a\ta\4b\tb\4c\tc\4d\td\4e\te\3\2\3\2\3\3\3\3\3\4\3\4\3\5\3\5\3\6"+
-    "\3\6\3\6\3\6\3\7\3\7\3\7\3\7\3\7\3\7\3\7\3\7\3\b\3\b\3\b\3\b\3\b\3\b\3"+
-    "\b\3\b\3\b\3\t\3\t\3\t\3\t\3\n\3\n\3\n\3\n\3\13\3\13\3\13\3\f\3\f\3\f"+
-    "\3\f\3\r\3\r\3\r\3\r\3\r\3\r\3\r\3\r\3\16\3\16\3\16\3\17\3\17\3\17\3\17"+
-    "\3\17\3\20\3\20\3\20\3\20\3\20\3\20\3\20\3\20\3\21\3\21\3\21\3\21\3\21"+
-    "\3\21\3\21\3\21\3\21\3\22\3\22\3\22\3\22\3\22\3\22\3\22\3\22\3\23\3\23"+
-    "\3\23\3\23\3\23\3\23\3\24\3\24\3\24\3\24\3\24\3\25\3\25\3\25\3\25\3\25"+
-    "\3\25\3\25\3\25\3\25\3\26\3\26\3\26\3\26\3\26\3\26\3\26\3\26\3\26\3\27"+
-    "\3\27\3\27\3\27\3\27\3\27\3\27\3\30\3\30\3\30\3\30\3\30\3\30\3\30\3\30"+
-    "\3\30\3\30\3\30\3\31\3\31\3\31\3\31\3\31\3\31\3\31\3\32\3\32\3\32\3\32"+
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+    "\2\2\u0313\u0311\3\2\2\2\u0314\u0318\5\u00cfh\2\u0315\u0319\5\u00d1i\2"+
+    "\u0316\u0319\5\u00cfh\2\u0317\u0319\t\4\2\2\u0318\u0315\3\2\2\2\u0318"+
+    "\u0316\3\2\2\2\u0318\u0317\3\2\2\2\u0319\u031a\3\2\2\2\u031a\u0318\3\2"+
+    "\2\2\u031a\u031b\3\2\2\2\u031b\u00c6\3\2\2\2\u031c\u0321\5\u00d1i\2\u031d"+
+    "\u0321\5\u00cfh\2\u031e\u0321\t\3\2\2\u031f\u0321\5\u00b1Y\2\u0320\u031c"+
+    "\3\2\2\2\u0320\u031d\3\2\2\2\u0320\u031e\3\2\2\2\u0320\u031f\3\2\2\2\u0321"+
+    "\u0322\3\2\2\2\u0322\u0320\3\2\2\2\u0322\u0323\3\2\2\2\u0323\u00c8\3\2"+
+    "\2\2\u0324\u032a\7$\2\2\u0325\u0329\n\5\2\2\u0326\u0327\7$\2\2\u0327\u0329"+
+    "\7$\2\2\u0328\u0325\3\2\2\2\u0328\u0326\3\2\2\2\u0329\u032c\3\2\2\2\u032a"+
+    "\u0328\3\2\2\2\u032a\u032b\3\2\2\2\u032b\u032d\3\2\2\2\u032c\u032a\3\2"+
+    "\2\2\u032d\u032e\7$\2\2\u032e\u00ca\3\2\2\2\u032f\u0335\7b\2\2\u0330\u0334"+
+    "\n\6\2\2\u0331\u0332\7b\2\2\u0332\u0334\7b\2\2\u0333\u0330\3\2\2\2\u0333"+
+    "\u0331\3\2\2\2\u0334\u0337\3\2\2\2\u0335\u0333\3\2\2\2\u0335\u0336\3\2"+
+    "\2\2\u0336\u0338\3\2\2\2\u0337\u0335\3\2\2\2\u0338\u0339\7b\2\2\u0339"+
+    "\u00cc\3\2\2\2\u033a\u033c\7G\2\2\u033b\u033d\t\7\2\2\u033c\u033b\3\2"+
+    "\2\2\u033c\u033d\3\2\2\2\u033d\u033f\3\2\2\2\u033e\u0340\5\u00cfh\2\u033f"+
+    "\u033e\3\2\2\2\u0340\u0341\3\2\2\2\u0341\u033f\3\2\2\2\u0341\u0342\3\2"+
+    "\2\2\u0342\u00ce\3\2\2\2\u0343\u0344\t\b\2\2\u0344\u00d0\3\2\2\2\u0345"+
+    "\u0346\t\t\2\2\u0346\u00d2\3\2\2\2\u0347\u0348\7/\2\2\u0348\u0349\7/\2"+
+    "\2\u0349\u034d\3\2\2\2\u034a\u034c\n\n\2\2\u034b\u034a\3\2\2\2\u034c\u034f"+
+    "\3\2\2\2\u034d\u034b\3\2\2\2\u034d\u034e\3\2\2\2\u034e\u0351\3\2\2\2\u034f"+
+    "\u034d\3\2\2\2\u0350\u0352\7\17\2\2\u0351\u0350\3\2\2\2\u0351\u0352\3"+
+    "\2\2\2\u0352\u0354\3\2\2\2\u0353\u0355\7\f\2\2\u0354\u0353\3\2\2\2\u0354"+
+    "\u0355\3\2\2\2\u0355\u0356\3\2\2\2\u0356\u0357\bj\2\2\u0357\u00d4\3\2"+
+    "\2\2\u0358\u0359\7\61\2\2\u0359\u035a\7,\2\2\u035a\u035f\3\2\2\2\u035b"+
+    "\u035e\5\u00d5k\2\u035c\u035e\13\2\2\2\u035d\u035b\3\2\2\2\u035d\u035c"+
+    "\3\2\2\2\u035e\u0361\3\2\2\2\u035f\u0360\3\2\2\2\u035f\u035d\3\2\2\2\u0360"+
+    "\u0362\3\2\2\2\u0361\u035f\3\2\2\2\u0362\u0363\7,\2\2\u0363\u0364\7\61"+
+    "\2\2\u0364\u0365\3\2\2\2\u0365\u0366\bk\2\2\u0366\u00d6\3\2\2\2\u0367"+
+    "\u0369\t\13\2\2\u0368\u0367\3\2\2\2\u0369\u036a\3\2\2\2\u036a\u0368\3"+
+    "\2\2\2\u036a\u036b\3\2\2\2\u036b\u036c\3\2\2\2\u036c\u036d\bl\2\2\u036d"+
+    "\u00d8\3\2\2\2\u036e\u036f\13\2\2\2\u036f\u00da\3\2\2\2\"\2\u02af\u02d0"+
+    "\u02d2\u02da\u02df\u02e5\u02ec\u02f1\u02f7\u02fa\u0302\u0306\u030a\u030f"+
+    "\u0311\u0318\u031a\u0320\u0322\u0328\u032a\u0333\u0335\u033c\u0341\u034d"+
+    "\u0351\u0354\u035d\u035f\u036a\3\2\3\2";
   public static final ATN _ATN =
     new ATNDeserializer().deserialize(_serializedATN.toCharArray());
   static {
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseListener.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseListener.java
index 48f6eb4a7c816..70fe777384c85 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseListener.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseListener.java
@@ -1,8 +1,3 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
 // ANTLR GENERATED CODE: DO NOT EDIT
 package org.elasticsearch.xpack.sql.parser;
 import org.antlr.v4.runtime.tree.ParseTreeListener;
@@ -196,6 +191,16 @@ interface SqlBaseListener extends ParseTreeListener {
    * @param ctx the parse tree
    */
   void exitQueryNoWith(SqlBaseParser.QueryNoWithContext ctx);
+  /**
+   * Enter a parse tree produced by {@link SqlBaseParser#limitClause}.
+   * @param ctx the parse tree
+   */
+  void enterLimitClause(SqlBaseParser.LimitClauseContext ctx);
+  /**
+   * Exit a parse tree produced by {@link SqlBaseParser#limitClause}.
+   * @param ctx the parse tree
+   */
+  void exitLimitClause(SqlBaseParser.LimitClauseContext ctx);
   /**
    * Enter a parse tree produced by the {@code queryPrimaryDefault}
    * labeled alternative in {@link SqlBaseParser#queryTerm}.
@@ -514,6 +519,16 @@ interface SqlBaseListener extends ParseTreeListener {
    * @param ctx the parse tree
    */
   void exitPattern(SqlBaseParser.PatternContext ctx);
+  /**
+   * Enter a parse tree produced by {@link SqlBaseParser#patternEscape}.
+   * @param ctx the parse tree
+   */
+  void enterPatternEscape(SqlBaseParser.PatternEscapeContext ctx);
+  /**
+   * Exit a parse tree produced by {@link SqlBaseParser#patternEscape}.
+   * @param ctx the parse tree
+   */
+  void exitPatternEscape(SqlBaseParser.PatternEscapeContext ctx);
   /**
    * Enter a parse tree produced by the {@code valueExpressionDefault}
    * labeled alternative in {@link SqlBaseParser#valueExpression}.
@@ -611,17 +626,17 @@ interface SqlBaseListener extends ParseTreeListener {
    */
   void exitStar(SqlBaseParser.StarContext ctx);
   /**
-   * Enter a parse tree produced by the {@code functionCall}
+   * Enter a parse tree produced by the {@code function}
    * labeled alternative in {@link SqlBaseParser#primaryExpression}.
    * @param ctx the parse tree
    */
-  void enterFunctionCall(SqlBaseParser.FunctionCallContext ctx);
+  void enterFunction(SqlBaseParser.FunctionContext ctx);
   /**
-   * Exit a parse tree produced by the {@code functionCall}
+   * Exit a parse tree produced by the {@code function}
    * labeled alternative in {@link SqlBaseParser#primaryExpression}.
    * @param ctx the parse tree
    */
-  void exitFunctionCall(SqlBaseParser.FunctionCallContext ctx);
+  void exitFunction(SqlBaseParser.FunctionContext ctx);
   /**
    * Enter a parse tree produced by the {@code subqueryExpression}
    * labeled alternative in {@link SqlBaseParser#primaryExpression}.
@@ -670,6 +685,66 @@ interface SqlBaseListener extends ParseTreeListener {
    * @param ctx the parse tree
    */
   void exitParenthesizedExpression(SqlBaseParser.ParenthesizedExpressionContext ctx);
+  /**
+   * Enter a parse tree produced by {@link SqlBaseParser#castExpression}.
+   * @param ctx the parse tree
+   */
+  void enterCastExpression(SqlBaseParser.CastExpressionContext ctx);
+  /**
+   * Exit a parse tree produced by {@link SqlBaseParser#castExpression}.
+   * @param ctx the parse tree
+   */
+  void exitCastExpression(SqlBaseParser.CastExpressionContext ctx);
+  /**
+   * Enter a parse tree produced by {@link SqlBaseParser#castTemplate}.
+   * @param ctx the parse tree
+   */
+  void enterCastTemplate(SqlBaseParser.CastTemplateContext ctx);
+  /**
+   * Exit a parse tree produced by {@link SqlBaseParser#castTemplate}.
+   * @param ctx the parse tree
+   */
+  void exitCastTemplate(SqlBaseParser.CastTemplateContext ctx);
+  /**
+   * Enter a parse tree produced by {@link SqlBaseParser#extractExpression}.
+   * @param ctx the parse tree
+   */
+  void enterExtractExpression(SqlBaseParser.ExtractExpressionContext ctx);
+  /**
+   * Exit a parse tree produced by {@link SqlBaseParser#extractExpression}.
+   * @param ctx the parse tree
+   */
+  void exitExtractExpression(SqlBaseParser.ExtractExpressionContext ctx);
+  /**
+   * Enter a parse tree produced by {@link SqlBaseParser#extractTemplate}.
+   * @param ctx the parse tree
+   */
+  void enterExtractTemplate(SqlBaseParser.ExtractTemplateContext ctx);
+  /**
+   * Exit a parse tree produced by {@link SqlBaseParser#extractTemplate}.
+   * @param ctx the parse tree
+   */
+  void exitExtractTemplate(SqlBaseParser.ExtractTemplateContext ctx);
+  /**
+   * Enter a parse tree produced by {@link SqlBaseParser#functionExpression}.
+   * @param ctx the parse tree
+   */
+  void enterFunctionExpression(SqlBaseParser.FunctionExpressionContext ctx);
+  /**
+   * Exit a parse tree produced by {@link SqlBaseParser#functionExpression}.
+   * @param ctx the parse tree
+   */
+  void exitFunctionExpression(SqlBaseParser.FunctionExpressionContext ctx);
+  /**
+   * Enter a parse tree produced by {@link SqlBaseParser#functionTemplate}.
+   * @param ctx the parse tree
+   */
+  void enterFunctionTemplate(SqlBaseParser.FunctionTemplateContext ctx);
+  /**
+   * Exit a parse tree produced by {@link SqlBaseParser#functionTemplate}.
+   * @param ctx the parse tree
+   */
+  void exitFunctionTemplate(SqlBaseParser.FunctionTemplateContext ctx);
   /**
    * Enter a parse tree produced by the {@code nullLiteral}
    * labeled alternative in {@link SqlBaseParser#constant}.
@@ -730,6 +805,54 @@ interface SqlBaseListener extends ParseTreeListener {
    * @param ctx the parse tree
    */
   void exitParamLiteral(SqlBaseParser.ParamLiteralContext ctx);
+  /**
+   * Enter a parse tree produced by the {@code dateEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   */
+  void enterDateEscapedLiteral(SqlBaseParser.DateEscapedLiteralContext ctx);
+  /**
+   * Exit a parse tree produced by the {@code dateEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   */
+  void exitDateEscapedLiteral(SqlBaseParser.DateEscapedLiteralContext ctx);
+  /**
+   * Enter a parse tree produced by the {@code timeEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   */
+  void enterTimeEscapedLiteral(SqlBaseParser.TimeEscapedLiteralContext ctx);
+  /**
+   * Exit a parse tree produced by the {@code timeEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   */
+  void exitTimeEscapedLiteral(SqlBaseParser.TimeEscapedLiteralContext ctx);
+  /**
+   * Enter a parse tree produced by the {@code timestampEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   */
+  void enterTimestampEscapedLiteral(SqlBaseParser.TimestampEscapedLiteralContext ctx);
+  /**
+   * Exit a parse tree produced by the {@code timestampEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   */
+  void exitTimestampEscapedLiteral(SqlBaseParser.TimestampEscapedLiteralContext ctx);
+  /**
+   * Enter a parse tree produced by the {@code guidEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   */
+  void enterGuidEscapedLiteral(SqlBaseParser.GuidEscapedLiteralContext ctx);
+  /**
+   * Exit a parse tree produced by the {@code guidEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   */
+  void exitGuidEscapedLiteral(SqlBaseParser.GuidEscapedLiteralContext ctx);
   /**
    * Enter a parse tree produced by {@link SqlBaseParser#comparisonOperator}.
    * @param ctx the parse tree
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseParser.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseParser.java
index 3535977943ba7..32a1b062feebf 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseParser.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseParser.java
@@ -1,15 +1,13 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
 // ANTLR GENERATED CODE: DO NOT EDIT
 package org.elasticsearch.xpack.sql.parser;
 import org.antlr.v4.runtime.atn.*;
 import org.antlr.v4.runtime.dfa.DFA;
 import org.antlr.v4.runtime.*;
+import org.antlr.v4.runtime.misc.*;
 import org.antlr.v4.runtime.tree.*;
 import java.util.List;
+import java.util.Iterator;
+import java.util.ArrayList;
 
 @SuppressWarnings({"all", "warnings", "unchecked", "unused", "cast"})
 class SqlBaseParser extends Parser {
@@ -28,33 +26,39 @@ class SqlBaseParser extends Parser {
     NOT=45, NULL=46, ON=47, OPTIMIZED=48, OR=49, ORDER=50, OUTER=51, PARSED=52, 
     PHYSICAL=53, PLAN=54, RIGHT=55, RLIKE=56, QUERY=57, SCHEMAS=58, SELECT=59, 
     SHOW=60, SYS=61, TABLE=62, TABLES=63, TEXT=64, TRUE=65, TYPE=66, TYPES=67, 
-    USING=68, VERIFY=69, WHERE=70, WITH=71, EQ=72, NEQ=73, LT=74, LTE=75, 
-    GT=76, GTE=77, PLUS=78, MINUS=79, ASTERISK=80, SLASH=81, PERCENT=82, CONCAT=83, 
-    DOT=84, PARAM=85, STRING=86, INTEGER_VALUE=87, DECIMAL_VALUE=88, IDENTIFIER=89, 
-    DIGIT_IDENTIFIER=90, TABLE_IDENTIFIER=91, QUOTED_IDENTIFIER=92, BACKQUOTED_IDENTIFIER=93, 
-    SIMPLE_COMMENT=94, BRACKETED_COMMENT=95, WS=96, UNRECOGNIZED=97, DELIMITER=98;
+    USING=68, VERIFY=69, WHERE=70, WITH=71, ESCAPE_ESC=72, FUNCTION_ESC=73, 
+    LIMIT_ESC=74, DATE_ESC=75, TIME_ESC=76, TIMESTAMP_ESC=77, GUID_ESC=78, 
+    ESC_END=79, EQ=80, NEQ=81, LT=82, LTE=83, GT=84, GTE=85, PLUS=86, MINUS=87, 
+    ASTERISK=88, SLASH=89, PERCENT=90, CONCAT=91, DOT=92, PARAM=93, STRING=94, 
+    INTEGER_VALUE=95, DECIMAL_VALUE=96, IDENTIFIER=97, DIGIT_IDENTIFIER=98, 
+    TABLE_IDENTIFIER=99, QUOTED_IDENTIFIER=100, BACKQUOTED_IDENTIFIER=101, 
+    SIMPLE_COMMENT=102, BRACKETED_COMMENT=103, WS=104, UNRECOGNIZED=105, DELIMITER=106;
   public static final int
     RULE_singleStatement = 0, RULE_singleExpression = 1, RULE_statement = 2, 
-    RULE_query = 3, RULE_queryNoWith = 4, RULE_queryTerm = 5, RULE_orderBy = 6, 
-    RULE_querySpecification = 7, RULE_fromClause = 8, RULE_groupBy = 9, RULE_groupingElement = 10, 
-    RULE_groupingExpressions = 11, RULE_namedQuery = 12, RULE_setQuantifier = 13, 
-    RULE_selectItem = 14, RULE_relation = 15, RULE_joinRelation = 16, RULE_joinType = 17, 
-    RULE_joinCriteria = 18, RULE_relationPrimary = 19, RULE_expression = 20, 
-    RULE_booleanExpression = 21, RULE_predicated = 22, RULE_predicate = 23, 
-    RULE_pattern = 24, RULE_valueExpression = 25, RULE_primaryExpression = 26, 
-    RULE_constant = 27, RULE_comparisonOperator = 28, RULE_booleanValue = 29, 
-    RULE_dataType = 30, RULE_qualifiedName = 31, RULE_identifier = 32, RULE_tableIdentifier = 33, 
-    RULE_quoteIdentifier = 34, RULE_unquoteIdentifier = 35, RULE_number = 36, 
-    RULE_string = 37, RULE_nonReserved = 38;
+    RULE_query = 3, RULE_queryNoWith = 4, RULE_limitClause = 5, RULE_queryTerm = 6, 
+    RULE_orderBy = 7, RULE_querySpecification = 8, RULE_fromClause = 9, RULE_groupBy = 10, 
+    RULE_groupingElement = 11, RULE_groupingExpressions = 12, RULE_namedQuery = 13, 
+    RULE_setQuantifier = 14, RULE_selectItem = 15, RULE_relation = 16, RULE_joinRelation = 17, 
+    RULE_joinType = 18, RULE_joinCriteria = 19, RULE_relationPrimary = 20, 
+    RULE_expression = 21, RULE_booleanExpression = 22, RULE_predicated = 23, 
+    RULE_predicate = 24, RULE_pattern = 25, RULE_patternEscape = 26, RULE_valueExpression = 27, 
+    RULE_primaryExpression = 28, RULE_castExpression = 29, RULE_castTemplate = 30, 
+    RULE_extractExpression = 31, RULE_extractTemplate = 32, RULE_functionExpression = 33, 
+    RULE_functionTemplate = 34, RULE_constant = 35, RULE_comparisonOperator = 36, 
+    RULE_booleanValue = 37, RULE_dataType = 38, RULE_qualifiedName = 39, RULE_identifier = 40, 
+    RULE_tableIdentifier = 41, RULE_quoteIdentifier = 42, RULE_unquoteIdentifier = 43, 
+    RULE_number = 44, RULE_string = 45, RULE_nonReserved = 46;
   public static final String[] ruleNames = {
     "singleStatement", "singleExpression", "statement", "query", "queryNoWith", 
-    "queryTerm", "orderBy", "querySpecification", "fromClause", "groupBy", 
-    "groupingElement", "groupingExpressions", "namedQuery", "setQuantifier", 
+    "limitClause", "queryTerm", "orderBy", "querySpecification", "fromClause", 
+    "groupBy", "groupingElement", "groupingExpressions", "namedQuery", "setQuantifier", 
     "selectItem", "relation", "joinRelation", "joinType", "joinCriteria", 
     "relationPrimary", "expression", "booleanExpression", "predicated", "predicate", 
-    "pattern", "valueExpression", "primaryExpression", "constant", "comparisonOperator", 
-    "booleanValue", "dataType", "qualifiedName", "identifier", "tableIdentifier", 
-    "quoteIdentifier", "unquoteIdentifier", "number", "string", "nonReserved"
+    "pattern", "patternEscape", "valueExpression", "primaryExpression", "castExpression", 
+    "castTemplate", "extractExpression", "extractTemplate", "functionExpression", 
+    "functionTemplate", "constant", "comparisonOperator", "booleanValue", 
+    "dataType", "qualifiedName", "identifier", "tableIdentifier", "quoteIdentifier", 
+    "unquoteIdentifier", "number", "string", "nonReserved"
   };
 
   private static final String[] _LITERAL_NAMES = {
@@ -68,8 +72,9 @@ class SqlBaseParser extends Parser {
     "'OR'", "'ORDER'", "'OUTER'", "'PARSED'", "'PHYSICAL'", "'PLAN'", "'RIGHT'", 
     "'RLIKE'", "'QUERY'", "'SCHEMAS'", "'SELECT'", "'SHOW'", "'SYS'", "'TABLE'", 
     "'TABLES'", "'TEXT'", "'TRUE'", "'TYPE'", "'TYPES'", "'USING'", "'VERIFY'", 
-    "'WHERE'", "'WITH'", "'='", null, "'<'", "'<='", "'>'", "'>='", "'+'", 
-    "'-'", "'*'", "'/'", "'%'", "'||'", "'.'", "'?'"
+    "'WHERE'", "'WITH'", "'{ESCAPE'", "'{FN'", "'{LIMIT'", "'{D'", "'{T'", 
+    "'{TS'", "'{GUID'", "'}'", "'='", null, "'<'", "'<='", "'>'", "'>='", 
+    "'+'", "'-'", "'*'", "'/'", "'%'", "'||'", "'.'", "'?'"
   };
   private static final String[] _SYMBOLIC_NAMES = {
     null, null, null, null, null, "ALL", "ANALYZE", "ANALYZED", "AND", "ANY", 
@@ -80,12 +85,13 @@ class SqlBaseParser extends Parser {
     "LIMIT", "MAPPED", "MATCH", "NATURAL", "NOT", "NULL", "ON", "OPTIMIZED", 
     "OR", "ORDER", "OUTER", "PARSED", "PHYSICAL", "PLAN", "RIGHT", "RLIKE", 
     "QUERY", "SCHEMAS", "SELECT", "SHOW", "SYS", "TABLE", "TABLES", "TEXT", 
-    "TRUE", "TYPE", "TYPES", "USING", "VERIFY", "WHERE", "WITH", "EQ", "NEQ", 
-    "LT", "LTE", "GT", "GTE", "PLUS", "MINUS", "ASTERISK", "SLASH", "PERCENT", 
-    "CONCAT", "DOT", "PARAM", "STRING", "INTEGER_VALUE", "DECIMAL_VALUE", 
-    "IDENTIFIER", "DIGIT_IDENTIFIER", "TABLE_IDENTIFIER", "QUOTED_IDENTIFIER", 
-    "BACKQUOTED_IDENTIFIER", "SIMPLE_COMMENT", "BRACKETED_COMMENT", "WS", 
-    "UNRECOGNIZED", "DELIMITER"
+    "TRUE", "TYPE", "TYPES", "USING", "VERIFY", "WHERE", "WITH", "ESCAPE_ESC", 
+    "FUNCTION_ESC", "LIMIT_ESC", "DATE_ESC", "TIME_ESC", "TIMESTAMP_ESC", 
+    "GUID_ESC", "ESC_END", "EQ", "NEQ", "LT", "LTE", "GT", "GTE", "PLUS", 
+    "MINUS", "ASTERISK", "SLASH", "PERCENT", "CONCAT", "DOT", "PARAM", "STRING", 
+    "INTEGER_VALUE", "DECIMAL_VALUE", "IDENTIFIER", "DIGIT_IDENTIFIER", "TABLE_IDENTIFIER", 
+    "QUOTED_IDENTIFIER", "BACKQUOTED_IDENTIFIER", "SIMPLE_COMMENT", "BRACKETED_COMMENT", 
+    "WS", "UNRECOGNIZED", "DELIMITER"
   };
   public static final Vocabulary VOCABULARY = new VocabularyImpl(_LITERAL_NAMES, _SYMBOLIC_NAMES);
 
@@ -166,9 +172,9 @@ public final SingleStatementContext singleStatement() throws RecognitionExceptio
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(78);
+      setState(94);
       statement();
-      setState(79);
+      setState(95);
       match(EOF);
       }
     }
@@ -213,9 +219,9 @@ public final SingleExpressionContext singleExpression() throws RecognitionExcept
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(81);
+      setState(97);
       expression();
-      setState(82);
+      setState(98);
       match(EOF);
       }
     }
@@ -601,14 +607,14 @@ public final StatementContext statement() throws RecognitionException {
     enterRule(_localctx, 4, RULE_statement);
     int _la;
     try {
-      setState(193);
+      setState(209);
       _errHandler.sync(this);
       switch ( getInterpreter().adaptivePredict(_input,21,_ctx) ) {
       case 1:
         _localctx = new StatementDefaultContext(_localctx);
         enterOuterAlt(_localctx, 1);
         {
-        setState(84);
+        setState(100);
         query();
         }
         break;
@@ -616,27 +622,27 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new ExplainContext(_localctx);
         enterOuterAlt(_localctx, 2);
         {
-        setState(85);
+        setState(101);
         match(EXPLAIN);
-        setState(99);
+        setState(115);
         _errHandler.sync(this);
         switch ( getInterpreter().adaptivePredict(_input,2,_ctx) ) {
         case 1:
           {
-          setState(86);
+          setState(102);
           match(T__0);
-          setState(95);
+          setState(111);
           _errHandler.sync(this);
           _la = _input.LA(1);
           while (((((_la - 28)) & ~0x3f) == 0 && ((1L << (_la - 28)) & ((1L << (FORMAT - 28)) | (1L << (PLAN - 28)) | (1L << (VERIFY - 28)))) != 0)) {
             {
-            setState(93);
+            setState(109);
             switch (_input.LA(1)) {
             case PLAN:
               {
-              setState(87);
+              setState(103);
               match(PLAN);
-              setState(88);
+              setState(104);
               ((ExplainContext)_localctx).type = _input.LT(1);
               _la = _input.LA(1);
               if ( !((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << ALL) | (1L << ANALYZED) | (1L << EXECUTABLE) | (1L << MAPPED) | (1L << OPTIMIZED) | (1L << PARSED))) != 0)) ) {
@@ -648,9 +654,9 @@ public final StatementContext statement() throws RecognitionException {
               break;
             case FORMAT:
               {
-              setState(89);
+              setState(105);
               match(FORMAT);
-              setState(90);
+              setState(106);
               ((ExplainContext)_localctx).format = _input.LT(1);
               _la = _input.LA(1);
               if ( !(_la==GRAPHVIZ || _la==TEXT) ) {
@@ -662,9 +668,9 @@ public final StatementContext statement() throws RecognitionException {
               break;
             case VERIFY:
               {
-              setState(91);
+              setState(107);
               match(VERIFY);
-              setState(92);
+              setState(108);
               ((ExplainContext)_localctx).verify = booleanValue();
               }
               break;
@@ -672,16 +678,16 @@ public final StatementContext statement() throws RecognitionException {
               throw new NoViableAltException(this);
             }
             }
-            setState(97);
+            setState(113);
             _errHandler.sync(this);
             _la = _input.LA(1);
           }
-          setState(98);
+          setState(114);
           match(T__1);
           }
           break;
         }
-        setState(101);
+        setState(117);
         statement();
         }
         break;
@@ -689,27 +695,27 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new DebugContext(_localctx);
         enterOuterAlt(_localctx, 3);
         {
-        setState(102);
+        setState(118);
         match(DEBUG);
-        setState(114);
+        setState(130);
         _errHandler.sync(this);
         switch ( getInterpreter().adaptivePredict(_input,5,_ctx) ) {
         case 1:
           {
-          setState(103);
+          setState(119);
           match(T__0);
-          setState(110);
+          setState(126);
           _errHandler.sync(this);
           _la = _input.LA(1);
           while (_la==FORMAT || _la==PLAN) {
             {
-            setState(108);
+            setState(124);
             switch (_input.LA(1)) {
             case PLAN:
               {
-              setState(104);
+              setState(120);
               match(PLAN);
-              setState(105);
+              setState(121);
               ((DebugContext)_localctx).type = _input.LT(1);
               _la = _input.LA(1);
               if ( !(_la==ANALYZED || _la==OPTIMIZED) ) {
@@ -721,9 +727,9 @@ public final StatementContext statement() throws RecognitionException {
               break;
             case FORMAT:
               {
-              setState(106);
+              setState(122);
               match(FORMAT);
-              setState(107);
+              setState(123);
               ((DebugContext)_localctx).format = _input.LT(1);
               _la = _input.LA(1);
               if ( !(_la==GRAPHVIZ || _la==TEXT) ) {
@@ -737,16 +743,16 @@ public final StatementContext statement() throws RecognitionException {
               throw new NoViableAltException(this);
             }
             }
-            setState(112);
+            setState(128);
             _errHandler.sync(this);
             _la = _input.LA(1);
           }
-          setState(113);
+          setState(129);
           match(T__1);
           }
           break;
         }
-        setState(116);
+        setState(132);
         statement();
         }
         break;
@@ -754,24 +760,24 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new ShowTablesContext(_localctx);
         enterOuterAlt(_localctx, 4);
         {
-        setState(117);
+        setState(133);
         match(SHOW);
-        setState(118);
+        setState(134);
         match(TABLES);
-        setState(123);
+        setState(139);
         _la = _input.LA(1);
         if (((((_la - 40)) & ~0x3f) == 0 && ((1L << (_la - 40)) & ((1L << (LIKE - 40)) | (1L << (PARAM - 40)) | (1L << (STRING - 40)))) != 0)) {
           {
-          setState(120);
+          setState(136);
           _la = _input.LA(1);
           if (_la==LIKE) {
             {
-            setState(119);
+            setState(135);
             match(LIKE);
             }
           }
 
-          setState(122);
+          setState(138);
           pattern();
           }
         }
@@ -782,18 +788,18 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new ShowColumnsContext(_localctx);
         enterOuterAlt(_localctx, 5);
         {
-        setState(125);
+        setState(141);
         match(SHOW);
-        setState(126);
+        setState(142);
         match(COLUMNS);
-        setState(127);
+        setState(143);
         _la = _input.LA(1);
         if ( !(_la==FROM || _la==IN) ) {
         _errHandler.recoverInline(this);
         } else {
           consume();
         }
-        setState(128);
+        setState(144);
         tableIdentifier();
         }
         break;
@@ -801,14 +807,14 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new ShowColumnsContext(_localctx);
         enterOuterAlt(_localctx, 6);
         {
-        setState(129);
+        setState(145);
         _la = _input.LA(1);
         if ( !(_la==DESC || _la==DESCRIBE) ) {
         _errHandler.recoverInline(this);
         } else {
           consume();
         }
-        setState(130);
+        setState(146);
         tableIdentifier();
         }
         break;
@@ -816,24 +822,24 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new ShowFunctionsContext(_localctx);
         enterOuterAlt(_localctx, 7);
         {
-        setState(131);
+        setState(147);
         match(SHOW);
-        setState(132);
+        setState(148);
         match(FUNCTIONS);
-        setState(137);
+        setState(153);
         _la = _input.LA(1);
         if (((((_la - 40)) & ~0x3f) == 0 && ((1L << (_la - 40)) & ((1L << (LIKE - 40)) | (1L << (PARAM - 40)) | (1L << (STRING - 40)))) != 0)) {
           {
-          setState(134);
+          setState(150);
           _la = _input.LA(1);
           if (_la==LIKE) {
             {
-            setState(133);
+            setState(149);
             match(LIKE);
             }
           }
 
-          setState(136);
+          setState(152);
           pattern();
           }
         }
@@ -844,9 +850,9 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new ShowSchemasContext(_localctx);
         enterOuterAlt(_localctx, 8);
         {
-        setState(139);
+        setState(155);
         match(SHOW);
-        setState(140);
+        setState(156);
         match(SCHEMAS);
         }
         break;
@@ -854,9 +860,9 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new SysCatalogsContext(_localctx);
         enterOuterAlt(_localctx, 9);
         {
-        setState(141);
+        setState(157);
         match(SYS);
-        setState(142);
+        setState(158);
         match(CATALOGS);
         }
         break;
@@ -864,69 +870,69 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new SysTablesContext(_localctx);
         enterOuterAlt(_localctx, 10);
         {
-        setState(143);
+        setState(159);
         match(SYS);
-        setState(144);
+        setState(160);
         match(TABLES);
-        setState(150);
+        setState(166);
         _la = _input.LA(1);
         if (_la==CATALOG) {
           {
-          setState(145);
+          setState(161);
           match(CATALOG);
-          setState(147);
+          setState(163);
           _la = _input.LA(1);
           if (_la==LIKE) {
             {
-            setState(146);
+            setState(162);
             match(LIKE);
             }
           }
 
-          setState(149);
+          setState(165);
           ((SysTablesContext)_localctx).clusterPattern = pattern();
           }
         }
 
-        setState(156);
+        setState(172);
         _la = _input.LA(1);
         if (((((_la - 40)) & ~0x3f) == 0 && ((1L << (_la - 40)) & ((1L << (LIKE - 40)) | (1L << (PARAM - 40)) | (1L << (STRING - 40)))) != 0)) {
           {
-          setState(153);
+          setState(169);
           _la = _input.LA(1);
           if (_la==LIKE) {
             {
-            setState(152);
+            setState(168);
             match(LIKE);
             }
           }
 
-          setState(155);
+          setState(171);
           ((SysTablesContext)_localctx).tablePattern = pattern();
           }
         }
 
-        setState(167);
+        setState(183);
         _la = _input.LA(1);
         if (_la==TYPE) {
           {
-          setState(158);
+          setState(174);
           match(TYPE);
-          setState(159);
+          setState(175);
           string();
-          setState(164);
+          setState(180);
           _errHandler.sync(this);
           _la = _input.LA(1);
           while (_la==T__2) {
             {
             {
-            setState(160);
+            setState(176);
             match(T__2);
-            setState(161);
+            setState(177);
             string();
             }
             }
-            setState(166);
+            setState(182);
             _errHandler.sync(this);
             _la = _input.LA(1);
           }
@@ -939,55 +945,55 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new SysColumnsContext(_localctx);
         enterOuterAlt(_localctx, 11);
         {
-        setState(169);
+        setState(185);
         match(SYS);
-        setState(170);
+        setState(186);
         match(COLUMNS);
-        setState(173);
+        setState(189);
         _la = _input.LA(1);
         if (_la==CATALOG) {
           {
-          setState(171);
+          setState(187);
           match(CATALOG);
-          setState(172);
+          setState(188);
           ((SysColumnsContext)_localctx).cluster = string();
           }
         }
 
-        setState(180);
+        setState(196);
         _la = _input.LA(1);
         if (_la==TABLE) {
           {
-          setState(175);
+          setState(191);
           match(TABLE);
-          setState(177);
+          setState(193);
           _la = _input.LA(1);
           if (_la==LIKE) {
             {
-            setState(176);
+            setState(192);
             match(LIKE);
             }
           }
 
-          setState(179);
+          setState(195);
           ((SysColumnsContext)_localctx).indexPattern = pattern();
           }
         }
 
-        setState(186);
+        setState(202);
         _la = _input.LA(1);
         if (((((_la - 40)) & ~0x3f) == 0 && ((1L << (_la - 40)) & ((1L << (LIKE - 40)) | (1L << (PARAM - 40)) | (1L << (STRING - 40)))) != 0)) {
           {
-          setState(183);
+          setState(199);
           _la = _input.LA(1);
           if (_la==LIKE) {
             {
-            setState(182);
+            setState(198);
             match(LIKE);
             }
           }
 
-          setState(185);
+          setState(201);
           ((SysColumnsContext)_localctx).columnPattern = pattern();
           }
         }
@@ -998,9 +1004,9 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new SysTypesContext(_localctx);
         enterOuterAlt(_localctx, 12);
         {
-        setState(188);
+        setState(204);
         match(SYS);
-        setState(189);
+        setState(205);
         match(TYPES);
         }
         break;
@@ -1008,11 +1014,11 @@ public final StatementContext statement() throws RecognitionException {
         _localctx = new SysTableTypesContext(_localctx);
         enterOuterAlt(_localctx, 13);
         {
-        setState(190);
+        setState(206);
         match(SYS);
-        setState(191);
+        setState(207);
         match(TABLE);
-        setState(192);
+        setState(208);
         match(TYPES);
         }
         break;
@@ -1066,34 +1072,34 @@ public final QueryContext query() throws RecognitionException {
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(204);
+      setState(220);
       _la = _input.LA(1);
       if (_la==WITH) {
         {
-        setState(195);
+        setState(211);
         match(WITH);
-        setState(196);
+        setState(212);
         namedQuery();
-        setState(201);
+        setState(217);
         _errHandler.sync(this);
         _la = _input.LA(1);
         while (_la==T__2) {
           {
           {
-          setState(197);
+          setState(213);
           match(T__2);
-          setState(198);
+          setState(214);
           namedQuery();
           }
           }
-          setState(203);
+          setState(219);
           _errHandler.sync(this);
           _la = _input.LA(1);
         }
         }
       }
 
-      setState(206);
+      setState(222);
       queryNoWith();
       }
     }
@@ -1109,7 +1115,6 @@ public final QueryContext query() throws RecognitionException {
   }
 
   public static class QueryNoWithContext extends ParserRuleContext {
-    public Token limit;
     public QueryTermContext queryTerm() {
       return getRuleContext(QueryTermContext.class,0);
     }
@@ -1121,9 +1126,9 @@ public List<OrderByContext> orderBy() {
     public OrderByContext orderBy(int i) {
       return getRuleContext(OrderByContext.class,i);
     }
-    public TerminalNode LIMIT() { return getToken(SqlBaseParser.LIMIT, 0); }
-    public TerminalNode INTEGER_VALUE() { return getToken(SqlBaseParser.INTEGER_VALUE, 0); }
-    public TerminalNode ALL() { return getToken(SqlBaseParser.ALL, 0); }
+    public LimitClauseContext limitClause() {
+      return getRuleContext(LimitClauseContext.class,0);
+    }
     public QueryNoWithContext(ParserRuleContext parent, int invokingState) {
       super(parent, invokingState);
     }
@@ -1150,54 +1155,126 @@ public final QueryNoWithContext queryNoWith() throws RecognitionException {
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(208);
+      setState(224);
       queryTerm();
-      setState(219);
+      setState(235);
       _la = _input.LA(1);
       if (_la==ORDER) {
         {
-        setState(209);
+        setState(225);
         match(ORDER);
-        setState(210);
+        setState(226);
         match(BY);
-        setState(211);
+        setState(227);
         orderBy();
-        setState(216);
+        setState(232);
         _errHandler.sync(this);
         _la = _input.LA(1);
         while (_la==T__2) {
           {
           {
-          setState(212);
+          setState(228);
           match(T__2);
-          setState(213);
+          setState(229);
           orderBy();
           }
           }
-          setState(218);
+          setState(234);
           _errHandler.sync(this);
           _la = _input.LA(1);
         }
         }
       }
 
-      setState(223);
+      setState(238);
       _la = _input.LA(1);
-      if (_la==LIMIT) {
+      if (_la==LIMIT || _la==LIMIT_ESC) {
+        {
+        setState(237);
+        limitClause();
+        }
+      }
+
+      }
+    }
+    catch (RecognitionException re) {
+      _localctx.exception = re;
+      _errHandler.reportError(this, re);
+      _errHandler.recover(this, re);
+    }
+    finally {
+      exitRule();
+    }
+    return _localctx;
+  }
+
+  public static class LimitClauseContext extends ParserRuleContext {
+    public Token limit;
+    public TerminalNode LIMIT() { return getToken(SqlBaseParser.LIMIT, 0); }
+    public TerminalNode INTEGER_VALUE() { return getToken(SqlBaseParser.INTEGER_VALUE, 0); }
+    public TerminalNode ALL() { return getToken(SqlBaseParser.ALL, 0); }
+    public TerminalNode LIMIT_ESC() { return getToken(SqlBaseParser.LIMIT_ESC, 0); }
+    public TerminalNode ESC_END() { return getToken(SqlBaseParser.ESC_END, 0); }
+    public LimitClauseContext(ParserRuleContext parent, int invokingState) {
+      super(parent, invokingState);
+    }
+    @Override public int getRuleIndex() { return RULE_limitClause; }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterLimitClause(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitLimitClause(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitLimitClause(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+
+  public final LimitClauseContext limitClause() throws RecognitionException {
+    LimitClauseContext _localctx = new LimitClauseContext(_ctx, getState());
+    enterRule(_localctx, 10, RULE_limitClause);
+    int _la;
+    try {
+      setState(245);
+      switch (_input.LA(1)) {
+      case LIMIT:
+        enterOuterAlt(_localctx, 1);
         {
-        setState(221);
+        setState(240);
         match(LIMIT);
-        setState(222);
-        ((QueryNoWithContext)_localctx).limit = _input.LT(1);
+        setState(241);
+        ((LimitClauseContext)_localctx).limit = _input.LT(1);
         _la = _input.LA(1);
         if ( !(_la==ALL || _la==INTEGER_VALUE) ) {
-          ((QueryNoWithContext)_localctx).limit = (Token)_errHandler.recoverInline(this);
+          ((LimitClauseContext)_localctx).limit = (Token)_errHandler.recoverInline(this);
         } else {
           consume();
         }
         }
-      }
-
+        break;
+      case LIMIT_ESC:
+        enterOuterAlt(_localctx, 2);
+        {
+        setState(242);
+        match(LIMIT_ESC);
+        setState(243);
+        ((LimitClauseContext)_localctx).limit = _input.LT(1);
+        _la = _input.LA(1);
+        if ( !(_la==ALL || _la==INTEGER_VALUE) ) {
+          ((LimitClauseContext)_localctx).limit = (Token)_errHandler.recoverInline(this);
+        } else {
+          consume();
+        }
+        setState(244);
+        match(ESC_END);
+        }
+        break;
+      default:
+        throw new NoViableAltException(this);
       }
     }
     catch (RecognitionException re) {
@@ -1263,15 +1340,15 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final QueryTermContext queryTerm() throws RecognitionException {
     QueryTermContext _localctx = new QueryTermContext(_ctx, getState());
-    enterRule(_localctx, 10, RULE_queryTerm);
+    enterRule(_localctx, 12, RULE_queryTerm);
     try {
-      setState(230);
+      setState(252);
       switch (_input.LA(1)) {
       case SELECT:
         _localctx = new QueryPrimaryDefaultContext(_localctx);
         enterOuterAlt(_localctx, 1);
         {
-        setState(225);
+        setState(247);
         querySpecification();
         }
         break;
@@ -1279,11 +1356,11 @@ public final QueryTermContext queryTerm() throws RecognitionException {
         _localctx = new SubqueryContext(_localctx);
         enterOuterAlt(_localctx, 2);
         {
-        setState(226);
+        setState(248);
         match(T__0);
-        setState(227);
+        setState(249);
         queryNoWith();
-        setState(228);
+        setState(250);
         match(T__1);
         }
         break;
@@ -1330,18 +1407,18 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final OrderByContext orderBy() throws RecognitionException {
     OrderByContext _localctx = new OrderByContext(_ctx, getState());
-    enterRule(_localctx, 12, RULE_orderBy);
+    enterRule(_localctx, 14, RULE_orderBy);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(232);
+      setState(254);
       expression();
-      setState(234);
+      setState(256);
       _la = _input.LA(1);
       if (_la==ASC || _la==DESC) {
         {
-        setState(233);
+        setState(255);
         ((OrderByContext)_localctx).ordering = _input.LT(1);
         _la = _input.LA(1);
         if ( !(_la==ASC || _la==DESC) ) {
@@ -1415,80 +1492,80 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final QuerySpecificationContext querySpecification() throws RecognitionException {
     QuerySpecificationContext _localctx = new QuerySpecificationContext(_ctx, getState());
-    enterRule(_localctx, 14, RULE_querySpecification);
+    enterRule(_localctx, 16, RULE_querySpecification);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(236);
+      setState(258);
       match(SELECT);
-      setState(238);
+      setState(260);
       _la = _input.LA(1);
       if (_la==ALL || _la==DISTINCT) {
         {
-        setState(237);
+        setState(259);
         setQuantifier();
         }
       }
 
-      setState(240);
+      setState(262);
       selectItem();
-      setState(245);
+      setState(267);
       _errHandler.sync(this);
       _la = _input.LA(1);
       while (_la==T__2) {
         {
         {
-        setState(241);
+        setState(263);
         match(T__2);
-        setState(242);
+        setState(264);
         selectItem();
         }
         }
-        setState(247);
+        setState(269);
         _errHandler.sync(this);
         _la = _input.LA(1);
       }
-      setState(249);
+      setState(271);
       _la = _input.LA(1);
       if (_la==FROM) {
         {
-        setState(248);
+        setState(270);
         fromClause();
         }
       }
 
-      setState(253);
+      setState(275);
       _la = _input.LA(1);
       if (_la==WHERE) {
         {
-        setState(251);
+        setState(273);
         match(WHERE);
-        setState(252);
+        setState(274);
         ((QuerySpecificationContext)_localctx).where = booleanExpression(0);
         }
       }
 
-      setState(258);
+      setState(280);
       _la = _input.LA(1);
       if (_la==GROUP) {
         {
-        setState(255);
+        setState(277);
         match(GROUP);
-        setState(256);
+        setState(278);
         match(BY);
-        setState(257);
+        setState(279);
         groupBy();
         }
       }
 
-      setState(262);
+      setState(284);
       _la = _input.LA(1);
       if (_la==HAVING) {
         {
-        setState(260);
+        setState(282);
         match(HAVING);
-        setState(261);
+        setState(283);
         ((QuerySpecificationContext)_localctx).having = booleanExpression(0);
         }
       }
@@ -1535,28 +1612,28 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final FromClauseContext fromClause() throws RecognitionException {
     FromClauseContext _localctx = new FromClauseContext(_ctx, getState());
-    enterRule(_localctx, 16, RULE_fromClause);
+    enterRule(_localctx, 18, RULE_fromClause);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(264);
+      setState(286);
       match(FROM);
-      setState(265);
+      setState(287);
       relation();
-      setState(270);
+      setState(292);
       _errHandler.sync(this);
       _la = _input.LA(1);
       while (_la==T__2) {
         {
         {
-        setState(266);
+        setState(288);
         match(T__2);
-        setState(267);
+        setState(289);
         relation();
         }
         }
-        setState(272);
+        setState(294);
         _errHandler.sync(this);
         _la = _input.LA(1);
       }
@@ -1604,35 +1681,35 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final GroupByContext groupBy() throws RecognitionException {
     GroupByContext _localctx = new GroupByContext(_ctx, getState());
-    enterRule(_localctx, 18, RULE_groupBy);
+    enterRule(_localctx, 20, RULE_groupBy);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(274);
+      setState(296);
       _la = _input.LA(1);
       if (_la==ALL || _la==DISTINCT) {
         {
-        setState(273);
+        setState(295);
         setQuantifier();
         }
       }
 
-      setState(276);
+      setState(298);
       groupingElement();
-      setState(281);
+      setState(303);
       _errHandler.sync(this);
       _la = _input.LA(1);
       while (_la==T__2) {
         {
         {
-        setState(277);
+        setState(299);
         match(T__2);
-        setState(278);
+        setState(300);
         groupingElement();
         }
         }
-        setState(283);
+        setState(305);
         _errHandler.sync(this);
         _la = _input.LA(1);
       }
@@ -1682,12 +1759,12 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final GroupingElementContext groupingElement() throws RecognitionException {
     GroupingElementContext _localctx = new GroupingElementContext(_ctx, getState());
-    enterRule(_localctx, 20, RULE_groupingElement);
+    enterRule(_localctx, 22, RULE_groupingElement);
     try {
       _localctx = new SingleGroupingSetContext(_localctx);
       enterOuterAlt(_localctx, 1);
       {
-      setState(284);
+      setState(306);
       groupingExpressions();
       }
     }
@@ -1730,50 +1807,50 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final GroupingExpressionsContext groupingExpressions() throws RecognitionException {
     GroupingExpressionsContext _localctx = new GroupingExpressionsContext(_ctx, getState());
-    enterRule(_localctx, 22, RULE_groupingExpressions);
+    enterRule(_localctx, 24, RULE_groupingExpressions);
     int _la;
     try {
-      setState(299);
+      setState(321);
       _errHandler.sync(this);
-      switch ( getInterpreter().adaptivePredict(_input,40,_ctx) ) {
+      switch ( getInterpreter().adaptivePredict(_input,41,_ctx) ) {
       case 1:
         enterOuterAlt(_localctx, 1);
         {
-        setState(286);
+        setState(308);
         match(T__0);
-        setState(295);
+        setState(317);
         _la = _input.LA(1);
-        if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << T__0) | (1L << ANALYZE) | (1L << ANALYZED) | (1L << CAST) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXISTS) | (1L << EXPLAIN) | (1L << EXTRACT) | (1L << FALSE) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << MATCH) | (1L << NOT) | (1L << NULL) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TRUE - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (PLUS - 64)) | (1L << (MINUS - 64)) | (1L << (ASTERISK - 64)) | (1L << (PARAM - 64)) | (1L << (STRING - 64)) | (1L << (INTEGER_VALUE - 64)) | (1L << (DECIMAL_VALUE - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
+        if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << T__0) | (1L << ANALYZE) | (1L << ANALYZED) | (1L << CAST) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXISTS) | (1L << EXPLAIN) | (1L << EXTRACT) | (1L << FALSE) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << MATCH) | (1L << NOT) | (1L << NULL) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TRUE - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (FUNCTION_ESC - 64)) | (1L << (DATE_ESC - 64)) | (1L << (TIME_ESC - 64)) | (1L << (TIMESTAMP_ESC - 64)) | (1L << (GUID_ESC - 64)) | (1L << (PLUS - 64)) | (1L << (MINUS - 64)) | (1L << (ASTERISK - 64)) | (1L << (PARAM - 64)) | (1L << (STRING - 64)) | (1L << (INTEGER_VALUE - 64)) | (1L << (DECIMAL_VALUE - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
           {
-          setState(287);
+          setState(309);
           expression();
-          setState(292);
+          setState(314);
           _errHandler.sync(this);
           _la = _input.LA(1);
           while (_la==T__2) {
             {
             {
-            setState(288);
+            setState(310);
             match(T__2);
-            setState(289);
+            setState(311);
             expression();
             }
             }
-            setState(294);
+            setState(316);
             _errHandler.sync(this);
             _la = _input.LA(1);
           }
           }
         }
 
-        setState(297);
+        setState(319);
         match(T__1);
         }
         break;
       case 2:
         enterOuterAlt(_localctx, 2);
         {
-        setState(298);
+        setState(320);
         expression();
         }
         break;
@@ -1820,19 +1897,19 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final NamedQueryContext namedQuery() throws RecognitionException {
     NamedQueryContext _localctx = new NamedQueryContext(_ctx, getState());
-    enterRule(_localctx, 24, RULE_namedQuery);
+    enterRule(_localctx, 26, RULE_namedQuery);
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(301);
+      setState(323);
       ((NamedQueryContext)_localctx).name = identifier();
-      setState(302);
+      setState(324);
       match(AS);
-      setState(303);
+      setState(325);
       match(T__0);
-      setState(304);
+      setState(326);
       queryNoWith();
-      setState(305);
+      setState(327);
       match(T__1);
       }
     }
@@ -1871,12 +1948,12 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final SetQuantifierContext setQuantifier() throws RecognitionException {
     SetQuantifierContext _localctx = new SetQuantifierContext(_ctx, getState());
-    enterRule(_localctx, 26, RULE_setQuantifier);
+    enterRule(_localctx, 28, RULE_setQuantifier);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(307);
+      setState(329);
       _la = _input.LA(1);
       if ( !(_la==ALL || _la==DISTINCT) ) {
       _errHandler.recoverInline(this);
@@ -1933,28 +2010,28 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final SelectItemContext selectItem() throws RecognitionException {
     SelectItemContext _localctx = new SelectItemContext(_ctx, getState());
-    enterRule(_localctx, 28, RULE_selectItem);
+    enterRule(_localctx, 30, RULE_selectItem);
     int _la;
     try {
       _localctx = new SelectExpressionContext(_localctx);
       enterOuterAlt(_localctx, 1);
       {
-      setState(309);
+      setState(331);
       expression();
-      setState(314);
+      setState(336);
       _la = _input.LA(1);
       if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << ANALYZE) | (1L << ANALYZED) | (1L << AS) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXPLAIN) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
         {
-        setState(311);
+        setState(333);
         _la = _input.LA(1);
         if (_la==AS) {
           {
-          setState(310);
+          setState(332);
           match(AS);
           }
         }
 
-        setState(313);
+        setState(335);
         identifier();
         }
       }
@@ -2003,24 +2080,24 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final RelationContext relation() throws RecognitionException {
     RelationContext _localctx = new RelationContext(_ctx, getState());
-    enterRule(_localctx, 30, RULE_relation);
+    enterRule(_localctx, 32, RULE_relation);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(316);
+      setState(338);
       relationPrimary();
-      setState(320);
+      setState(342);
       _errHandler.sync(this);
       _la = _input.LA(1);
       while ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << FULL) | (1L << INNER) | (1L << JOIN) | (1L << LEFT) | (1L << NATURAL) | (1L << RIGHT))) != 0)) {
         {
         {
-        setState(317);
+        setState(339);
         joinRelation();
         }
         }
-        setState(322);
+        setState(344);
         _errHandler.sync(this);
         _la = _input.LA(1);
       }
@@ -2071,10 +2148,10 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final JoinRelationContext joinRelation() throws RecognitionException {
     JoinRelationContext _localctx = new JoinRelationContext(_ctx, getState());
-    enterRule(_localctx, 32, RULE_joinRelation);
+    enterRule(_localctx, 34, RULE_joinRelation);
     int _la;
     try {
-      setState(334);
+      setState(356);
       switch (_input.LA(1)) {
       case FULL:
       case INNER:
@@ -2084,18 +2161,18 @@ public final JoinRelationContext joinRelation() throws RecognitionException {
         enterOuterAlt(_localctx, 1);
         {
         {
-        setState(323);
+        setState(345);
         joinType();
         }
-        setState(324);
+        setState(346);
         match(JOIN);
-        setState(325);
+        setState(347);
         ((JoinRelationContext)_localctx).right = relationPrimary();
-        setState(327);
+        setState(349);
         _la = _input.LA(1);
         if (_la==ON || _la==USING) {
           {
-          setState(326);
+          setState(348);
           joinCriteria();
           }
         }
@@ -2105,13 +2182,13 @@ public final JoinRelationContext joinRelation() throws RecognitionException {
       case NATURAL:
         enterOuterAlt(_localctx, 2);
         {
-        setState(329);
+        setState(351);
         match(NATURAL);
-        setState(330);
+        setState(352);
         joinType();
-        setState(331);
+        setState(353);
         match(JOIN);
-        setState(332);
+        setState(354);
         ((JoinRelationContext)_localctx).right = relationPrimary();
         }
         break;
@@ -2157,20 +2234,20 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final JoinTypeContext joinType() throws RecognitionException {
     JoinTypeContext _localctx = new JoinTypeContext(_ctx, getState());
-    enterRule(_localctx, 34, RULE_joinType);
+    enterRule(_localctx, 36, RULE_joinType);
     int _la;
     try {
-      setState(351);
+      setState(373);
       switch (_input.LA(1)) {
       case INNER:
       case JOIN:
         enterOuterAlt(_localctx, 1);
         {
-        setState(337);
+        setState(359);
         _la = _input.LA(1);
         if (_la==INNER) {
           {
-          setState(336);
+          setState(358);
           match(INNER);
           }
         }
@@ -2180,13 +2257,13 @@ public final JoinTypeContext joinType() throws RecognitionException {
       case LEFT:
         enterOuterAlt(_localctx, 2);
         {
-        setState(339);
+        setState(361);
         match(LEFT);
-        setState(341);
+        setState(363);
         _la = _input.LA(1);
         if (_la==OUTER) {
           {
-          setState(340);
+          setState(362);
           match(OUTER);
           }
         }
@@ -2196,13 +2273,13 @@ public final JoinTypeContext joinType() throws RecognitionException {
       case RIGHT:
         enterOuterAlt(_localctx, 3);
         {
-        setState(343);
+        setState(365);
         match(RIGHT);
-        setState(345);
+        setState(367);
         _la = _input.LA(1);
         if (_la==OUTER) {
           {
-          setState(344);
+          setState(366);
           match(OUTER);
           }
         }
@@ -2212,13 +2289,13 @@ public final JoinTypeContext joinType() throws RecognitionException {
       case FULL:
         enterOuterAlt(_localctx, 4);
         {
-        setState(347);
+        setState(369);
         match(FULL);
-        setState(349);
+        setState(371);
         _la = _input.LA(1);
         if (_la==OUTER) {
           {
-          setState(348);
+          setState(370);
           match(OUTER);
           }
         }
@@ -2273,46 +2350,46 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final JoinCriteriaContext joinCriteria() throws RecognitionException {
     JoinCriteriaContext _localctx = new JoinCriteriaContext(_ctx, getState());
-    enterRule(_localctx, 36, RULE_joinCriteria);
+    enterRule(_localctx, 38, RULE_joinCriteria);
     int _la;
     try {
-      setState(367);
+      setState(389);
       switch (_input.LA(1)) {
       case ON:
         enterOuterAlt(_localctx, 1);
         {
-        setState(353);
+        setState(375);
         match(ON);
-        setState(354);
+        setState(376);
         booleanExpression(0);
         }
         break;
       case USING:
         enterOuterAlt(_localctx, 2);
         {
-        setState(355);
+        setState(377);
         match(USING);
-        setState(356);
+        setState(378);
         match(T__0);
-        setState(357);
+        setState(379);
         identifier();
-        setState(362);
+        setState(384);
         _errHandler.sync(this);
         _la = _input.LA(1);
         while (_la==T__2) {
           {
           {
-          setState(358);
+          setState(380);
           match(T__2);
-          setState(359);
+          setState(381);
           identifier();
           }
           }
-          setState(364);
+          setState(386);
           _errHandler.sync(this);
           _la = _input.LA(1);
         }
-        setState(365);
+        setState(387);
         match(T__1);
         }
         break;
@@ -2414,32 +2491,32 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final RelationPrimaryContext relationPrimary() throws RecognitionException {
     RelationPrimaryContext _localctx = new RelationPrimaryContext(_ctx, getState());
-    enterRule(_localctx, 38, RULE_relationPrimary);
+    enterRule(_localctx, 40, RULE_relationPrimary);
     int _la;
     try {
-      setState(394);
+      setState(416);
       _errHandler.sync(this);
-      switch ( getInterpreter().adaptivePredict(_input,59,_ctx) ) {
+      switch ( getInterpreter().adaptivePredict(_input,60,_ctx) ) {
       case 1:
         _localctx = new TableNameContext(_localctx);
         enterOuterAlt(_localctx, 1);
         {
-        setState(369);
+        setState(391);
         tableIdentifier();
-        setState(374);
+        setState(396);
         _la = _input.LA(1);
         if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << ANALYZE) | (1L << ANALYZED) | (1L << AS) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXPLAIN) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
           {
-          setState(371);
+          setState(393);
           _la = _input.LA(1);
           if (_la==AS) {
             {
-            setState(370);
+            setState(392);
             match(AS);
             }
           }
 
-          setState(373);
+          setState(395);
           qualifiedName();
           }
         }
@@ -2450,26 +2527,26 @@ public final RelationPrimaryContext relationPrimary() throws RecognitionExceptio
         _localctx = new AliasedQueryContext(_localctx);
         enterOuterAlt(_localctx, 2);
         {
-        setState(376);
+        setState(398);
         match(T__0);
-        setState(377);
+        setState(399);
         queryNoWith();
-        setState(378);
+        setState(400);
         match(T__1);
-        setState(383);
+        setState(405);
         _la = _input.LA(1);
         if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << ANALYZE) | (1L << ANALYZED) | (1L << AS) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXPLAIN) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
           {
-          setState(380);
+          setState(402);
           _la = _input.LA(1);
           if (_la==AS) {
             {
-            setState(379);
+            setState(401);
             match(AS);
             }
           }
 
-          setState(382);
+          setState(404);
           qualifiedName();
           }
         }
@@ -2480,26 +2557,26 @@ public final RelationPrimaryContext relationPrimary() throws RecognitionExceptio
         _localctx = new AliasedRelationContext(_localctx);
         enterOuterAlt(_localctx, 3);
         {
-        setState(385);
+        setState(407);
         match(T__0);
-        setState(386);
+        setState(408);
         relation();
-        setState(387);
+        setState(409);
         match(T__1);
-        setState(392);
+        setState(414);
         _la = _input.LA(1);
         if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << ANALYZE) | (1L << ANALYZED) | (1L << AS) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXPLAIN) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
           {
-          setState(389);
+          setState(411);
           _la = _input.LA(1);
           if (_la==AS) {
             {
-            setState(388);
+            setState(410);
             match(AS);
             }
           }
 
-          setState(391);
+          setState(413);
           qualifiedName();
           }
         }
@@ -2544,11 +2621,11 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final ExpressionContext expression() throws RecognitionException {
     ExpressionContext _localctx = new ExpressionContext(_ctx, getState());
-    enterRule(_localctx, 40, RULE_expression);
+    enterRule(_localctx, 42, RULE_expression);
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(396);
+      setState(418);
       booleanExpression(0);
       }
     }
@@ -2750,25 +2827,25 @@ private BooleanExpressionContext booleanExpression(int _p) throws RecognitionExc
     int _parentState = getState();
     BooleanExpressionContext _localctx = new BooleanExpressionContext(_ctx, _parentState);
     BooleanExpressionContext _prevctx = _localctx;
-    int _startState = 42;
-    enterRecursionRule(_localctx, 42, RULE_booleanExpression, _p);
+    int _startState = 44;
+    enterRecursionRule(_localctx, 44, RULE_booleanExpression, _p);
     int _la;
     try {
       int _alt;
       enterOuterAlt(_localctx, 1);
       {
-      setState(447);
+      setState(469);
       _errHandler.sync(this);
-      switch ( getInterpreter().adaptivePredict(_input,63,_ctx) ) {
+      switch ( getInterpreter().adaptivePredict(_input,64,_ctx) ) {
       case 1:
         {
         _localctx = new LogicalNotContext(_localctx);
         _ctx = _localctx;
         _prevctx = _localctx;
 
-        setState(399);
+        setState(421);
         match(NOT);
-        setState(400);
+        setState(422);
         booleanExpression(8);
         }
         break;
@@ -2777,13 +2854,13 @@ private BooleanExpressionContext booleanExpression(int _p) throws RecognitionExc
         _localctx = new ExistsContext(_localctx);
         _ctx = _localctx;
         _prevctx = _localctx;
-        setState(401);
+        setState(423);
         match(EXISTS);
-        setState(402);
+        setState(424);
         match(T__0);
-        setState(403);
+        setState(425);
         query();
-        setState(404);
+        setState(426);
         match(T__1);
         }
         break;
@@ -2792,29 +2869,29 @@ private BooleanExpressionContext booleanExpression(int _p) throws RecognitionExc
         _localctx = new StringQueryContext(_localctx);
         _ctx = _localctx;
         _prevctx = _localctx;
-        setState(406);
+        setState(428);
         match(QUERY);
-        setState(407);
+        setState(429);
         match(T__0);
-        setState(408);
+        setState(430);
         ((StringQueryContext)_localctx).queryString = string();
-        setState(413);
+        setState(435);
         _errHandler.sync(this);
         _la = _input.LA(1);
         while (_la==T__2) {
           {
           {
-          setState(409);
+          setState(431);
           match(T__2);
-          setState(410);
+          setState(432);
           ((StringQueryContext)_localctx).options = string();
           }
           }
-          setState(415);
+          setState(437);
           _errHandler.sync(this);
           _la = _input.LA(1);
         }
-        setState(416);
+        setState(438);
         match(T__1);
         }
         break;
@@ -2823,33 +2900,33 @@ private BooleanExpressionContext booleanExpression(int _p) throws RecognitionExc
         _localctx = new MatchQueryContext(_localctx);
         _ctx = _localctx;
         _prevctx = _localctx;
-        setState(418);
+        setState(440);
         match(MATCH);
-        setState(419);
+        setState(441);
         match(T__0);
-        setState(420);
+        setState(442);
         ((MatchQueryContext)_localctx).singleField = qualifiedName();
-        setState(421);
+        setState(443);
         match(T__2);
-        setState(422);
+        setState(444);
         ((MatchQueryContext)_localctx).queryString = string();
-        setState(427);
+        setState(449);
         _errHandler.sync(this);
         _la = _input.LA(1);
         while (_la==T__2) {
           {
           {
-          setState(423);
+          setState(445);
           match(T__2);
-          setState(424);
+          setState(446);
           ((MatchQueryContext)_localctx).options = string();
           }
           }
-          setState(429);
+          setState(451);
           _errHandler.sync(this);
           _la = _input.LA(1);
         }
-        setState(430);
+        setState(452);
         match(T__1);
         }
         break;
@@ -2858,33 +2935,33 @@ private BooleanExpressionContext booleanExpression(int _p) throws RecognitionExc
         _localctx = new MultiMatchQueryContext(_localctx);
         _ctx = _localctx;
         _prevctx = _localctx;
-        setState(432);
+        setState(454);
         match(MATCH);
-        setState(433);
+        setState(455);
         match(T__0);
-        setState(434);
+        setState(456);
         ((MultiMatchQueryContext)_localctx).multiFields = string();
-        setState(435);
+        setState(457);
         match(T__2);
-        setState(436);
+        setState(458);
         ((MultiMatchQueryContext)_localctx).queryString = string();
-        setState(441);
+        setState(463);
         _errHandler.sync(this);
         _la = _input.LA(1);
         while (_la==T__2) {
           {
           {
-          setState(437);
+          setState(459);
           match(T__2);
-          setState(438);
+          setState(460);
           ((MultiMatchQueryContext)_localctx).options = string();
           }
           }
-          setState(443);
+          setState(465);
           _errHandler.sync(this);
           _la = _input.LA(1);
         }
-        setState(444);
+        setState(466);
         match(T__1);
         }
         break;
@@ -2893,33 +2970,33 @@ private BooleanExpressionContext booleanExpression(int _p) throws RecognitionExc
         _localctx = new BooleanDefaultContext(_localctx);
         _ctx = _localctx;
         _prevctx = _localctx;
-        setState(446);
+        setState(468);
         predicated();
         }
         break;
       }
       _ctx.stop = _input.LT(-1);
-      setState(457);
+      setState(479);
       _errHandler.sync(this);
-      _alt = getInterpreter().adaptivePredict(_input,65,_ctx);
+      _alt = getInterpreter().adaptivePredict(_input,66,_ctx);
       while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ) {
         if ( _alt==1 ) {
           if ( _parseListeners!=null ) triggerExitRuleEvent();
           _prevctx = _localctx;
           {
-          setState(455);
+          setState(477);
           _errHandler.sync(this);
-          switch ( getInterpreter().adaptivePredict(_input,64,_ctx) ) {
+          switch ( getInterpreter().adaptivePredict(_input,65,_ctx) ) {
           case 1:
             {
             _localctx = new LogicalBinaryContext(new BooleanExpressionContext(_parentctx, _parentState));
             ((LogicalBinaryContext)_localctx).left = _prevctx;
             pushNewRecursionContext(_localctx, _startState, RULE_booleanExpression);
-            setState(449);
+            setState(471);
             if (!(precpred(_ctx, 2))) throw new FailedPredicateException(this, "precpred(_ctx, 2)");
-            setState(450);
+            setState(472);
             ((LogicalBinaryContext)_localctx).operator = match(AND);
-            setState(451);
+            setState(473);
             ((LogicalBinaryContext)_localctx).right = booleanExpression(3);
             }
             break;
@@ -2928,20 +3005,20 @@ private BooleanExpressionContext booleanExpression(int _p) throws RecognitionExc
             _localctx = new LogicalBinaryContext(new BooleanExpressionContext(_parentctx, _parentState));
             ((LogicalBinaryContext)_localctx).left = _prevctx;
             pushNewRecursionContext(_localctx, _startState, RULE_booleanExpression);
-            setState(452);
+            setState(474);
             if (!(precpred(_ctx, 1))) throw new FailedPredicateException(this, "precpred(_ctx, 1)");
-            setState(453);
+            setState(475);
             ((LogicalBinaryContext)_localctx).operator = match(OR);
-            setState(454);
+            setState(476);
             ((LogicalBinaryContext)_localctx).right = booleanExpression(2);
             }
             break;
           }
           } 
         }
-        setState(459);
+        setState(481);
         _errHandler.sync(this);
-        _alt = getInterpreter().adaptivePredict(_input,65,_ctx);
+        _alt = getInterpreter().adaptivePredict(_input,66,_ctx);
       }
       }
     }
@@ -2984,18 +3061,18 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final PredicatedContext predicated() throws RecognitionException {
     PredicatedContext _localctx = new PredicatedContext(_ctx, getState());
-    enterRule(_localctx, 44, RULE_predicated);
+    enterRule(_localctx, 46, RULE_predicated);
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(460);
+      setState(482);
       valueExpression(0);
-      setState(462);
+      setState(484);
       _errHandler.sync(this);
-      switch ( getInterpreter().adaptivePredict(_input,66,_ctx) ) {
+      switch ( getInterpreter().adaptivePredict(_input,67,_ctx) ) {
       case 1:
         {
-        setState(461);
+        setState(483);
         predicate();
         }
         break;
@@ -3068,145 +3145,145 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final PredicateContext predicate() throws RecognitionException {
     PredicateContext _localctx = new PredicateContext(_ctx, getState());
-    enterRule(_localctx, 46, RULE_predicate);
+    enterRule(_localctx, 48, RULE_predicate);
     int _la;
     try {
-      setState(510);
+      setState(532);
       _errHandler.sync(this);
-      switch ( getInterpreter().adaptivePredict(_input,74,_ctx) ) {
+      switch ( getInterpreter().adaptivePredict(_input,75,_ctx) ) {
       case 1:
         enterOuterAlt(_localctx, 1);
         {
-        setState(465);
+        setState(487);
         _la = _input.LA(1);
         if (_la==NOT) {
           {
-          setState(464);
+          setState(486);
           match(NOT);
           }
         }
 
-        setState(467);
+        setState(489);
         ((PredicateContext)_localctx).kind = match(BETWEEN);
-        setState(468);
+        setState(490);
         ((PredicateContext)_localctx).lower = valueExpression(0);
-        setState(469);
+        setState(491);
         match(AND);
-        setState(470);
+        setState(492);
         ((PredicateContext)_localctx).upper = valueExpression(0);
         }
         break;
       case 2:
         enterOuterAlt(_localctx, 2);
         {
-        setState(473);
+        setState(495);
         _la = _input.LA(1);
         if (_la==NOT) {
           {
-          setState(472);
+          setState(494);
           match(NOT);
           }
         }
 
-        setState(475);
+        setState(497);
         ((PredicateContext)_localctx).kind = match(IN);
-        setState(476);
+        setState(498);
         match(T__0);
-        setState(477);
+        setState(499);
         expression();
-        setState(482);
+        setState(504);
         _errHandler.sync(this);
         _la = _input.LA(1);
         while (_la==T__2) {
           {
           {
-          setState(478);
+          setState(500);
           match(T__2);
-          setState(479);
+          setState(501);
           expression();
           }
           }
-          setState(484);
+          setState(506);
           _errHandler.sync(this);
           _la = _input.LA(1);
         }
-        setState(485);
+        setState(507);
         match(T__1);
         }
         break;
       case 3:
         enterOuterAlt(_localctx, 3);
         {
-        setState(488);
+        setState(510);
         _la = _input.LA(1);
         if (_la==NOT) {
           {
-          setState(487);
+          setState(509);
           match(NOT);
           }
         }
 
-        setState(490);
+        setState(512);
         ((PredicateContext)_localctx).kind = match(IN);
-        setState(491);
+        setState(513);
         match(T__0);
-        setState(492);
+        setState(514);
         query();
-        setState(493);
+        setState(515);
         match(T__1);
         }
         break;
       case 4:
         enterOuterAlt(_localctx, 4);
         {
-        setState(496);
+        setState(518);
         _la = _input.LA(1);
         if (_la==NOT) {
           {
-          setState(495);
+          setState(517);
           match(NOT);
           }
         }
 
-        setState(498);
+        setState(520);
         ((PredicateContext)_localctx).kind = match(LIKE);
-        setState(499);
+        setState(521);
         pattern();
         }
         break;
       case 5:
         enterOuterAlt(_localctx, 5);
         {
-        setState(501);
+        setState(523);
         _la = _input.LA(1);
         if (_la==NOT) {
           {
-          setState(500);
+          setState(522);
           match(NOT);
           }
         }
 
-        setState(503);
+        setState(525);
         ((PredicateContext)_localctx).kind = match(RLIKE);
-        setState(504);
+        setState(526);
         ((PredicateContext)_localctx).regex = string();
         }
         break;
       case 6:
         enterOuterAlt(_localctx, 6);
         {
-        setState(505);
+        setState(527);
         match(IS);
-        setState(507);
+        setState(529);
         _la = _input.LA(1);
         if (_la==NOT) {
           {
-          setState(506);
+          setState(528);
           match(NOT);
           }
         }
 
-        setState(509);
+        setState(531);
         ((PredicateContext)_localctx).kind = match(NULL);
         }
         break;
@@ -3225,14 +3302,12 @@ public final PredicateContext predicate() throws RecognitionException {
 
   public static class PatternContext extends ParserRuleContext {
     public StringContext value;
-    public StringContext escape;
-    public List<StringContext> string() {
-      return getRuleContexts(StringContext.class);
+    public StringContext string() {
+      return getRuleContext(StringContext.class,0);
     }
-    public StringContext string(int i) {
-      return getRuleContext(StringContext.class,i);
+    public PatternEscapeContext patternEscape() {
+      return getRuleContext(PatternEscapeContext.class,0);
     }
-    public TerminalNode ESCAPE() { return getToken(SqlBaseParser.ESCAPE, 0); }
     public PatternContext(ParserRuleContext parent, int invokingState) {
       super(parent, invokingState);
     }
@@ -3254,21 +3329,19 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final PatternContext pattern() throws RecognitionException {
     PatternContext _localctx = new PatternContext(_ctx, getState());
-    enterRule(_localctx, 48, RULE_pattern);
+    enterRule(_localctx, 50, RULE_pattern);
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(512);
+      setState(534);
       ((PatternContext)_localctx).value = string();
-      setState(515);
+      setState(536);
       _errHandler.sync(this);
-      switch ( getInterpreter().adaptivePredict(_input,75,_ctx) ) {
+      switch ( getInterpreter().adaptivePredict(_input,76,_ctx) ) {
       case 1:
         {
-        setState(513);
-        match(ESCAPE);
-        setState(514);
-        ((PatternContext)_localctx).escape = string();
+        setState(535);
+        patternEscape();
         }
         break;
       }
@@ -3285,19 +3358,86 @@ public final PatternContext pattern() throws RecognitionException {
     return _localctx;
   }
 
-  public static class ValueExpressionContext extends ParserRuleContext {
-    public ValueExpressionContext(ParserRuleContext parent, int invokingState) {
+  public static class PatternEscapeContext extends ParserRuleContext {
+    public StringContext escape;
+    public TerminalNode ESCAPE() { return getToken(SqlBaseParser.ESCAPE, 0); }
+    public StringContext string() {
+      return getRuleContext(StringContext.class,0);
+    }
+    public TerminalNode ESCAPE_ESC() { return getToken(SqlBaseParser.ESCAPE_ESC, 0); }
+    public PatternEscapeContext(ParserRuleContext parent, int invokingState) {
       super(parent, invokingState);
     }
-    @Override public int getRuleIndex() { return RULE_valueExpression; }
-   
-    public ValueExpressionContext() { }
-    public void copyFrom(ValueExpressionContext ctx) {
-      super.copyFrom(ctx);
+    @Override public int getRuleIndex() { return RULE_patternEscape; }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterPatternEscape(this);
     }
-  }
-  public static class ValueExpressionDefaultContext extends ValueExpressionContext {
-    public PrimaryExpressionContext primaryExpression() {
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitPatternEscape(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitPatternEscape(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+
+  public final PatternEscapeContext patternEscape() throws RecognitionException {
+    PatternEscapeContext _localctx = new PatternEscapeContext(_ctx, getState());
+    enterRule(_localctx, 52, RULE_patternEscape);
+    try {
+      setState(544);
+      switch (_input.LA(1)) {
+      case ESCAPE:
+        enterOuterAlt(_localctx, 1);
+        {
+        setState(538);
+        match(ESCAPE);
+        setState(539);
+        ((PatternEscapeContext)_localctx).escape = string();
+        }
+        break;
+      case ESCAPE_ESC:
+        enterOuterAlt(_localctx, 2);
+        {
+        setState(540);
+        match(ESCAPE_ESC);
+        setState(541);
+        ((PatternEscapeContext)_localctx).escape = string();
+        setState(542);
+        match(ESC_END);
+        }
+        break;
+      default:
+        throw new NoViableAltException(this);
+      }
+    }
+    catch (RecognitionException re) {
+      _localctx.exception = re;
+      _errHandler.reportError(this, re);
+      _errHandler.recover(this, re);
+    }
+    finally {
+      exitRule();
+    }
+    return _localctx;
+  }
+
+  public static class ValueExpressionContext extends ParserRuleContext {
+    public ValueExpressionContext(ParserRuleContext parent, int invokingState) {
+      super(parent, invokingState);
+    }
+    @Override public int getRuleIndex() { return RULE_valueExpression; }
+   
+    public ValueExpressionContext() { }
+    public void copyFrom(ValueExpressionContext ctx) {
+      super.copyFrom(ctx);
+    }
+  }
+  public static class ValueExpressionDefaultContext extends ValueExpressionContext {
+    public PrimaryExpressionContext primaryExpression() {
       return getRuleContext(PrimaryExpressionContext.class,0);
     }
     public ValueExpressionDefaultContext(ValueExpressionContext ctx) { copyFrom(ctx); }
@@ -3404,14 +3544,14 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
     int _parentState = getState();
     ValueExpressionContext _localctx = new ValueExpressionContext(_ctx, _parentState);
     ValueExpressionContext _prevctx = _localctx;
-    int _startState = 50;
-    enterRecursionRule(_localctx, 50, RULE_valueExpression, _p);
+    int _startState = 54;
+    enterRecursionRule(_localctx, 54, RULE_valueExpression, _p);
     int _la;
     try {
       int _alt;
       enterOuterAlt(_localctx, 1);
       {
-      setState(521);
+      setState(550);
       switch (_input.LA(1)) {
       case T__0:
       case ANALYZE:
@@ -3444,6 +3584,11 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
       case TYPE:
       case TYPES:
       case VERIFY:
+      case FUNCTION_ESC:
+      case DATE_ESC:
+      case TIME_ESC:
+      case TIMESTAMP_ESC:
+      case GUID_ESC:
       case ASTERISK:
       case PARAM:
       case STRING:
@@ -3458,7 +3603,7 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
         _ctx = _localctx;
         _prevctx = _localctx;
 
-        setState(518);
+        setState(547);
         primaryExpression();
         }
         break;
@@ -3468,7 +3613,7 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
         _localctx = new ArithmeticUnaryContext(_localctx);
         _ctx = _localctx;
         _prevctx = _localctx;
-        setState(519);
+        setState(548);
         ((ArithmeticUnaryContext)_localctx).operator = _input.LT(1);
         _la = _input.LA(1);
         if ( !(_la==PLUS || _la==MINUS) ) {
@@ -3476,7 +3621,7 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
         } else {
           consume();
         }
-        setState(520);
+        setState(549);
         valueExpression(4);
         }
         break;
@@ -3484,33 +3629,33 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
         throw new NoViableAltException(this);
       }
       _ctx.stop = _input.LT(-1);
-      setState(535);
+      setState(564);
       _errHandler.sync(this);
-      _alt = getInterpreter().adaptivePredict(_input,78,_ctx);
+      _alt = getInterpreter().adaptivePredict(_input,80,_ctx);
       while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ) {
         if ( _alt==1 ) {
           if ( _parseListeners!=null ) triggerExitRuleEvent();
           _prevctx = _localctx;
           {
-          setState(533);
+          setState(562);
           _errHandler.sync(this);
-          switch ( getInterpreter().adaptivePredict(_input,77,_ctx) ) {
+          switch ( getInterpreter().adaptivePredict(_input,79,_ctx) ) {
           case 1:
             {
             _localctx = new ArithmeticBinaryContext(new ValueExpressionContext(_parentctx, _parentState));
             ((ArithmeticBinaryContext)_localctx).left = _prevctx;
             pushNewRecursionContext(_localctx, _startState, RULE_valueExpression);
-            setState(523);
+            setState(552);
             if (!(precpred(_ctx, 3))) throw new FailedPredicateException(this, "precpred(_ctx, 3)");
-            setState(524);
+            setState(553);
             ((ArithmeticBinaryContext)_localctx).operator = _input.LT(1);
             _la = _input.LA(1);
-            if ( !(((((_la - 80)) & ~0x3f) == 0 && ((1L << (_la - 80)) & ((1L << (ASTERISK - 80)) | (1L << (SLASH - 80)) | (1L << (PERCENT - 80)))) != 0)) ) {
+            if ( !(((((_la - 88)) & ~0x3f) == 0 && ((1L << (_la - 88)) & ((1L << (ASTERISK - 88)) | (1L << (SLASH - 88)) | (1L << (PERCENT - 88)))) != 0)) ) {
               ((ArithmeticBinaryContext)_localctx).operator = (Token)_errHandler.recoverInline(this);
             } else {
               consume();
             }
-            setState(525);
+            setState(554);
             ((ArithmeticBinaryContext)_localctx).right = valueExpression(4);
             }
             break;
@@ -3519,9 +3664,9 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
             _localctx = new ArithmeticBinaryContext(new ValueExpressionContext(_parentctx, _parentState));
             ((ArithmeticBinaryContext)_localctx).left = _prevctx;
             pushNewRecursionContext(_localctx, _startState, RULE_valueExpression);
-            setState(526);
+            setState(555);
             if (!(precpred(_ctx, 2))) throw new FailedPredicateException(this, "precpred(_ctx, 2)");
-            setState(527);
+            setState(556);
             ((ArithmeticBinaryContext)_localctx).operator = _input.LT(1);
             _la = _input.LA(1);
             if ( !(_la==PLUS || _la==MINUS) ) {
@@ -3529,7 +3674,7 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
             } else {
               consume();
             }
-            setState(528);
+            setState(557);
             ((ArithmeticBinaryContext)_localctx).right = valueExpression(3);
             }
             break;
@@ -3538,20 +3683,20 @@ private ValueExpressionContext valueExpression(int _p) throws RecognitionExcepti
             _localctx = new ComparisonContext(new ValueExpressionContext(_parentctx, _parentState));
             ((ComparisonContext)_localctx).left = _prevctx;
             pushNewRecursionContext(_localctx, _startState, RULE_valueExpression);
-            setState(529);
+            setState(558);
             if (!(precpred(_ctx, 1))) throw new FailedPredicateException(this, "precpred(_ctx, 1)");
-            setState(530);
+            setState(559);
             comparisonOperator();
-            setState(531);
+            setState(560);
             ((ComparisonContext)_localctx).right = valueExpression(2);
             }
             break;
           }
           } 
         }
-        setState(537);
+        setState(566);
         _errHandler.sync(this);
-        _alt = getInterpreter().adaptivePredict(_input,78,_ctx);
+        _alt = getInterpreter().adaptivePredict(_input,80,_ctx);
       }
       }
     }
@@ -3597,13 +3742,8 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
     }
   }
   public static class CastContext extends PrimaryExpressionContext {
-    public TerminalNode CAST() { return getToken(SqlBaseParser.CAST, 0); }
-    public ExpressionContext expression() {
-      return getRuleContext(ExpressionContext.class,0);
-    }
-    public TerminalNode AS() { return getToken(SqlBaseParser.AS, 0); }
-    public DataTypeContext dataType() {
-      return getRuleContext(DataTypeContext.class,0);
+    public CastExpressionContext castExpression() {
+      return getRuleContext(CastExpressionContext.class,0);
     }
     public CastContext(PrimaryExpressionContext ctx) { copyFrom(ctx); }
     @Override
@@ -3659,14 +3799,8 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
     }
   }
   public static class ExtractContext extends PrimaryExpressionContext {
-    public IdentifierContext field;
-    public TerminalNode EXTRACT() { return getToken(SqlBaseParser.EXTRACT, 0); }
-    public TerminalNode FROM() { return getToken(SqlBaseParser.FROM, 0); }
-    public ValueExpressionContext valueExpression() {
-      return getRuleContext(ValueExpressionContext.class,0);
-    }
-    public IdentifierContext identifier() {
-      return getRuleContext(IdentifierContext.class,0);
+    public ExtractExpressionContext extractExpression() {
+      return getRuleContext(ExtractExpressionContext.class,0);
     }
     public ExtractContext(PrimaryExpressionContext ctx) { copyFrom(ctx); }
     @Override
@@ -3713,17 +3847,514 @@ public QualifiedNameContext qualifiedName() {
     public void enterRule(ParseTreeListener listener) {
       if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterStar(this);
     }
-    @Override
-    public void exitRule(ParseTreeListener listener) {
-      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitStar(this);
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitStar(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitStar(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+  public static class FunctionContext extends PrimaryExpressionContext {
+    public FunctionExpressionContext functionExpression() {
+      return getRuleContext(FunctionExpressionContext.class,0);
+    }
+    public FunctionContext(PrimaryExpressionContext ctx) { copyFrom(ctx); }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterFunction(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitFunction(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitFunction(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+  public static class SubqueryExpressionContext extends PrimaryExpressionContext {
+    public QueryContext query() {
+      return getRuleContext(QueryContext.class,0);
+    }
+    public SubqueryExpressionContext(PrimaryExpressionContext ctx) { copyFrom(ctx); }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterSubqueryExpression(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitSubqueryExpression(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitSubqueryExpression(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+
+  public final PrimaryExpressionContext primaryExpression() throws RecognitionException {
+    PrimaryExpressionContext _localctx = new PrimaryExpressionContext(_ctx, getState());
+    enterRule(_localctx, 56, RULE_primaryExpression);
+    int _la;
+    try {
+      setState(588);
+      _errHandler.sync(this);
+      switch ( getInterpreter().adaptivePredict(_input,82,_ctx) ) {
+      case 1:
+        _localctx = new CastContext(_localctx);
+        enterOuterAlt(_localctx, 1);
+        {
+        setState(567);
+        castExpression();
+        }
+        break;
+      case 2:
+        _localctx = new ExtractContext(_localctx);
+        enterOuterAlt(_localctx, 2);
+        {
+        setState(568);
+        extractExpression();
+        }
+        break;
+      case 3:
+        _localctx = new ConstantDefaultContext(_localctx);
+        enterOuterAlt(_localctx, 3);
+        {
+        setState(569);
+        constant();
+        }
+        break;
+      case 4:
+        _localctx = new StarContext(_localctx);
+        enterOuterAlt(_localctx, 4);
+        {
+        setState(570);
+        match(ASTERISK);
+        }
+        break;
+      case 5:
+        _localctx = new StarContext(_localctx);
+        enterOuterAlt(_localctx, 5);
+        {
+        setState(574);
+        _la = _input.LA(1);
+        if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << ANALYZE) | (1L << ANALYZED) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXPLAIN) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
+          {
+          setState(571);
+          qualifiedName();
+          setState(572);
+          match(DOT);
+          }
+        }
+
+        setState(576);
+        match(ASTERISK);
+        }
+        break;
+      case 6:
+        _localctx = new FunctionContext(_localctx);
+        enterOuterAlt(_localctx, 6);
+        {
+        setState(577);
+        functionExpression();
+        }
+        break;
+      case 7:
+        _localctx = new SubqueryExpressionContext(_localctx);
+        enterOuterAlt(_localctx, 7);
+        {
+        setState(578);
+        match(T__0);
+        setState(579);
+        query();
+        setState(580);
+        match(T__1);
+        }
+        break;
+      case 8:
+        _localctx = new ColumnReferenceContext(_localctx);
+        enterOuterAlt(_localctx, 8);
+        {
+        setState(582);
+        identifier();
+        }
+        break;
+      case 9:
+        _localctx = new DereferenceContext(_localctx);
+        enterOuterAlt(_localctx, 9);
+        {
+        setState(583);
+        qualifiedName();
+        }
+        break;
+      case 10:
+        _localctx = new ParenthesizedExpressionContext(_localctx);
+        enterOuterAlt(_localctx, 10);
+        {
+        setState(584);
+        match(T__0);
+        setState(585);
+        expression();
+        setState(586);
+        match(T__1);
+        }
+        break;
+      }
+    }
+    catch (RecognitionException re) {
+      _localctx.exception = re;
+      _errHandler.reportError(this, re);
+      _errHandler.recover(this, re);
+    }
+    finally {
+      exitRule();
+    }
+    return _localctx;
+  }
+
+  public static class CastExpressionContext extends ParserRuleContext {
+    public CastTemplateContext castTemplate() {
+      return getRuleContext(CastTemplateContext.class,0);
+    }
+    public TerminalNode FUNCTION_ESC() { return getToken(SqlBaseParser.FUNCTION_ESC, 0); }
+    public TerminalNode ESC_END() { return getToken(SqlBaseParser.ESC_END, 0); }
+    public CastExpressionContext(ParserRuleContext parent, int invokingState) {
+      super(parent, invokingState);
+    }
+    @Override public int getRuleIndex() { return RULE_castExpression; }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterCastExpression(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitCastExpression(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitCastExpression(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+
+  public final CastExpressionContext castExpression() throws RecognitionException {
+    CastExpressionContext _localctx = new CastExpressionContext(_ctx, getState());
+    enterRule(_localctx, 58, RULE_castExpression);
+    try {
+      setState(595);
+      switch (_input.LA(1)) {
+      case CAST:
+        enterOuterAlt(_localctx, 1);
+        {
+        setState(590);
+        castTemplate();
+        }
+        break;
+      case FUNCTION_ESC:
+        enterOuterAlt(_localctx, 2);
+        {
+        setState(591);
+        match(FUNCTION_ESC);
+        setState(592);
+        castTemplate();
+        setState(593);
+        match(ESC_END);
+        }
+        break;
+      default:
+        throw new NoViableAltException(this);
+      }
+    }
+    catch (RecognitionException re) {
+      _localctx.exception = re;
+      _errHandler.reportError(this, re);
+      _errHandler.recover(this, re);
+    }
+    finally {
+      exitRule();
+    }
+    return _localctx;
+  }
+
+  public static class CastTemplateContext extends ParserRuleContext {
+    public TerminalNode CAST() { return getToken(SqlBaseParser.CAST, 0); }
+    public ExpressionContext expression() {
+      return getRuleContext(ExpressionContext.class,0);
+    }
+    public TerminalNode AS() { return getToken(SqlBaseParser.AS, 0); }
+    public DataTypeContext dataType() {
+      return getRuleContext(DataTypeContext.class,0);
+    }
+    public CastTemplateContext(ParserRuleContext parent, int invokingState) {
+      super(parent, invokingState);
+    }
+    @Override public int getRuleIndex() { return RULE_castTemplate; }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterCastTemplate(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitCastTemplate(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitCastTemplate(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+
+  public final CastTemplateContext castTemplate() throws RecognitionException {
+    CastTemplateContext _localctx = new CastTemplateContext(_ctx, getState());
+    enterRule(_localctx, 60, RULE_castTemplate);
+    try {
+      enterOuterAlt(_localctx, 1);
+      {
+      setState(597);
+      match(CAST);
+      setState(598);
+      match(T__0);
+      setState(599);
+      expression();
+      setState(600);
+      match(AS);
+      setState(601);
+      dataType();
+      setState(602);
+      match(T__1);
+      }
+    }
+    catch (RecognitionException re) {
+      _localctx.exception = re;
+      _errHandler.reportError(this, re);
+      _errHandler.recover(this, re);
+    }
+    finally {
+      exitRule();
+    }
+    return _localctx;
+  }
+
+  public static class ExtractExpressionContext extends ParserRuleContext {
+    public ExtractTemplateContext extractTemplate() {
+      return getRuleContext(ExtractTemplateContext.class,0);
+    }
+    public TerminalNode FUNCTION_ESC() { return getToken(SqlBaseParser.FUNCTION_ESC, 0); }
+    public TerminalNode ESC_END() { return getToken(SqlBaseParser.ESC_END, 0); }
+    public ExtractExpressionContext(ParserRuleContext parent, int invokingState) {
+      super(parent, invokingState);
+    }
+    @Override public int getRuleIndex() { return RULE_extractExpression; }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterExtractExpression(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitExtractExpression(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitExtractExpression(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+
+  public final ExtractExpressionContext extractExpression() throws RecognitionException {
+    ExtractExpressionContext _localctx = new ExtractExpressionContext(_ctx, getState());
+    enterRule(_localctx, 62, RULE_extractExpression);
+    try {
+      setState(609);
+      switch (_input.LA(1)) {
+      case EXTRACT:
+        enterOuterAlt(_localctx, 1);
+        {
+        setState(604);
+        extractTemplate();
+        }
+        break;
+      case FUNCTION_ESC:
+        enterOuterAlt(_localctx, 2);
+        {
+        setState(605);
+        match(FUNCTION_ESC);
+        setState(606);
+        extractTemplate();
+        setState(607);
+        match(ESC_END);
+        }
+        break;
+      default:
+        throw new NoViableAltException(this);
+      }
+    }
+    catch (RecognitionException re) {
+      _localctx.exception = re;
+      _errHandler.reportError(this, re);
+      _errHandler.recover(this, re);
+    }
+    finally {
+      exitRule();
+    }
+    return _localctx;
+  }
+
+  public static class ExtractTemplateContext extends ParserRuleContext {
+    public IdentifierContext field;
+    public TerminalNode EXTRACT() { return getToken(SqlBaseParser.EXTRACT, 0); }
+    public TerminalNode FROM() { return getToken(SqlBaseParser.FROM, 0); }
+    public ValueExpressionContext valueExpression() {
+      return getRuleContext(ValueExpressionContext.class,0);
+    }
+    public IdentifierContext identifier() {
+      return getRuleContext(IdentifierContext.class,0);
+    }
+    public ExtractTemplateContext(ParserRuleContext parent, int invokingState) {
+      super(parent, invokingState);
+    }
+    @Override public int getRuleIndex() { return RULE_extractTemplate; }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterExtractTemplate(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitExtractTemplate(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitExtractTemplate(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+
+  public final ExtractTemplateContext extractTemplate() throws RecognitionException {
+    ExtractTemplateContext _localctx = new ExtractTemplateContext(_ctx, getState());
+    enterRule(_localctx, 64, RULE_extractTemplate);
+    try {
+      enterOuterAlt(_localctx, 1);
+      {
+      setState(611);
+      match(EXTRACT);
+      setState(612);
+      match(T__0);
+      setState(613);
+      ((ExtractTemplateContext)_localctx).field = identifier();
+      setState(614);
+      match(FROM);
+      setState(615);
+      valueExpression(0);
+      setState(616);
+      match(T__1);
+      }
+    }
+    catch (RecognitionException re) {
+      _localctx.exception = re;
+      _errHandler.reportError(this, re);
+      _errHandler.recover(this, re);
+    }
+    finally {
+      exitRule();
+    }
+    return _localctx;
+  }
+
+  public static class FunctionExpressionContext extends ParserRuleContext {
+    public FunctionTemplateContext functionTemplate() {
+      return getRuleContext(FunctionTemplateContext.class,0);
+    }
+    public TerminalNode FUNCTION_ESC() { return getToken(SqlBaseParser.FUNCTION_ESC, 0); }
+    public FunctionExpressionContext(ParserRuleContext parent, int invokingState) {
+      super(parent, invokingState);
+    }
+    @Override public int getRuleIndex() { return RULE_functionExpression; }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterFunctionExpression(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitFunctionExpression(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitFunctionExpression(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+
+  public final FunctionExpressionContext functionExpression() throws RecognitionException {
+    FunctionExpressionContext _localctx = new FunctionExpressionContext(_ctx, getState());
+    enterRule(_localctx, 66, RULE_functionExpression);
+    try {
+      setState(623);
+      switch (_input.LA(1)) {
+      case ANALYZE:
+      case ANALYZED:
+      case CATALOGS:
+      case COLUMNS:
+      case DEBUG:
+      case EXECUTABLE:
+      case EXPLAIN:
+      case FORMAT:
+      case FUNCTIONS:
+      case GRAPHVIZ:
+      case MAPPED:
+      case OPTIMIZED:
+      case PARSED:
+      case PHYSICAL:
+      case PLAN:
+      case RLIKE:
+      case QUERY:
+      case SCHEMAS:
+      case SHOW:
+      case SYS:
+      case TABLES:
+      case TEXT:
+      case TYPE:
+      case TYPES:
+      case VERIFY:
+      case IDENTIFIER:
+      case DIGIT_IDENTIFIER:
+      case QUOTED_IDENTIFIER:
+      case BACKQUOTED_IDENTIFIER:
+        enterOuterAlt(_localctx, 1);
+        {
+        setState(618);
+        functionTemplate();
+        }
+        break;
+      case FUNCTION_ESC:
+        enterOuterAlt(_localctx, 2);
+        {
+        setState(619);
+        match(FUNCTION_ESC);
+        setState(620);
+        functionTemplate();
+        setState(621);
+        match(ESC_END);
+        }
+        break;
+      default:
+        throw new NoViableAltException(this);
+      }
+    }
+    catch (RecognitionException re) {
+      _localctx.exception = re;
+      _errHandler.reportError(this, re);
+      _errHandler.recover(this, re);
     }
-    @Override
-    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
-      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitStar(this);
-      else return visitor.visitChildren(this);
+    finally {
+      exitRule();
     }
+    return _localctx;
   }
-  public static class FunctionCallContext extends PrimaryExpressionContext {
+
+  public static class FunctionTemplateContext extends ParserRuleContext {
     public IdentifierContext identifier() {
       return getRuleContext(IdentifierContext.class,0);
     }
@@ -3736,206 +4367,72 @@ public ExpressionContext expression(int i) {
     public SetQuantifierContext setQuantifier() {
       return getRuleContext(SetQuantifierContext.class,0);
     }
-    public FunctionCallContext(PrimaryExpressionContext ctx) { copyFrom(ctx); }
-    @Override
-    public void enterRule(ParseTreeListener listener) {
-      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterFunctionCall(this);
-    }
-    @Override
-    public void exitRule(ParseTreeListener listener) {
-      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitFunctionCall(this);
-    }
-    @Override
-    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
-      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitFunctionCall(this);
-      else return visitor.visitChildren(this);
-    }
-  }
-  public static class SubqueryExpressionContext extends PrimaryExpressionContext {
-    public QueryContext query() {
-      return getRuleContext(QueryContext.class,0);
+    public FunctionTemplateContext(ParserRuleContext parent, int invokingState) {
+      super(parent, invokingState);
     }
-    public SubqueryExpressionContext(PrimaryExpressionContext ctx) { copyFrom(ctx); }
+    @Override public int getRuleIndex() { return RULE_functionTemplate; }
     @Override
     public void enterRule(ParseTreeListener listener) {
-      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterSubqueryExpression(this);
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterFunctionTemplate(this);
     }
     @Override
     public void exitRule(ParseTreeListener listener) {
-      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitSubqueryExpression(this);
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitFunctionTemplate(this);
     }
     @Override
     public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
-      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitSubqueryExpression(this);
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitFunctionTemplate(this);
       else return visitor.visitChildren(this);
     }
   }
 
-  public final PrimaryExpressionContext primaryExpression() throws RecognitionException {
-    PrimaryExpressionContext _localctx = new PrimaryExpressionContext(_ctx, getState());
-    enterRule(_localctx, 52, RULE_primaryExpression);
+  public final FunctionTemplateContext functionTemplate() throws RecognitionException {
+    FunctionTemplateContext _localctx = new FunctionTemplateContext(_ctx, getState());
+    enterRule(_localctx, 68, RULE_functionTemplate);
     int _la;
     try {
-      setState(587);
-      _errHandler.sync(this);
-      switch ( getInterpreter().adaptivePredict(_input,83,_ctx) ) {
-      case 1:
-        _localctx = new CastContext(_localctx);
-        enterOuterAlt(_localctx, 1);
-        {
-        setState(538);
-        match(CAST);
-        setState(539);
-        match(T__0);
-        setState(540);
-        expression();
-        setState(541);
-        match(AS);
-        setState(542);
-        dataType();
-        setState(543);
-        match(T__1);
-        }
-        break;
-      case 2:
-        _localctx = new ExtractContext(_localctx);
-        enterOuterAlt(_localctx, 2);
-        {
-        setState(545);
-        match(EXTRACT);
-        setState(546);
-        match(T__0);
-        setState(547);
-        ((ExtractContext)_localctx).field = identifier();
-        setState(548);
-        match(FROM);
-        setState(549);
-        valueExpression(0);
-        setState(550);
-        match(T__1);
-        }
-        break;
-      case 3:
-        _localctx = new ConstantDefaultContext(_localctx);
-        enterOuterAlt(_localctx, 3);
-        {
-        setState(552);
-        constant();
-        }
-        break;
-      case 4:
-        _localctx = new StarContext(_localctx);
-        enterOuterAlt(_localctx, 4);
-        {
-        setState(553);
-        match(ASTERISK);
-        }
-        break;
-      case 5:
-        _localctx = new StarContext(_localctx);
-        enterOuterAlt(_localctx, 5);
+      enterOuterAlt(_localctx, 1);
+      {
+      setState(625);
+      identifier();
+      setState(626);
+      match(T__0);
+      setState(638);
+      _la = _input.LA(1);
+      if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << T__0) | (1L << ALL) | (1L << ANALYZE) | (1L << ANALYZED) | (1L << CAST) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << DISTINCT) | (1L << EXECUTABLE) | (1L << EXISTS) | (1L << EXPLAIN) | (1L << EXTRACT) | (1L << FALSE) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << MATCH) | (1L << NOT) | (1L << NULL) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TRUE - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (FUNCTION_ESC - 64)) | (1L << (DATE_ESC - 64)) | (1L << (TIME_ESC - 64)) | (1L << (TIMESTAMP_ESC - 64)) | (1L << (GUID_ESC - 64)) | (1L << (PLUS - 64)) | (1L << (MINUS - 64)) | (1L << (ASTERISK - 64)) | (1L << (PARAM - 64)) | (1L << (STRING - 64)) | (1L << (INTEGER_VALUE - 64)) | (1L << (DECIMAL_VALUE - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
         {
-        setState(557);
+        setState(628);
         _la = _input.LA(1);
-        if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << ANALYZE) | (1L << ANALYZED) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXPLAIN) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
+        if (_la==ALL || _la==DISTINCT) {
           {
-          setState(554);
-          qualifiedName();
-          setState(555);
-          match(DOT);
+          setState(627);
+          setQuantifier();
           }
         }
 
-        setState(559);
-        match(ASTERISK);
-        }
-        break;
-      case 6:
-        _localctx = new FunctionCallContext(_localctx);
-        enterOuterAlt(_localctx, 6);
-        {
-        setState(560);
-        identifier();
-        setState(561);
-        match(T__0);
-        setState(573);
+        setState(630);
+        expression();
+        setState(635);
+        _errHandler.sync(this);
         _la = _input.LA(1);
-        if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << T__0) | (1L << ALL) | (1L << ANALYZE) | (1L << ANALYZED) | (1L << CAST) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << DISTINCT) | (1L << EXECUTABLE) | (1L << EXISTS) | (1L << EXPLAIN) | (1L << EXTRACT) | (1L << FALSE) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << MATCH) | (1L << NOT) | (1L << NULL) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TRUE - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (PLUS - 64)) | (1L << (MINUS - 64)) | (1L << (ASTERISK - 64)) | (1L << (PARAM - 64)) | (1L << (STRING - 64)) | (1L << (INTEGER_VALUE - 64)) | (1L << (DECIMAL_VALUE - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
+        while (_la==T__2) {
           {
-          setState(563);
-          _la = _input.LA(1);
-          if (_la==ALL || _la==DISTINCT) {
-            {
-            setState(562);
-            setQuantifier();
-            }
-          }
-
-          setState(565);
+          {
+          setState(631);
+          match(T__2);
+          setState(632);
           expression();
-          setState(570);
-          _errHandler.sync(this);
-          _la = _input.LA(1);
-          while (_la==T__2) {
-            {
-            {
-            setState(566);
-            match(T__2);
-            setState(567);
-            expression();
-            }
-            }
-            setState(572);
-            _errHandler.sync(this);
-            _la = _input.LA(1);
           }
           }
+          setState(637);
+          _errHandler.sync(this);
+          _la = _input.LA(1);
         }
-
-        setState(575);
-        match(T__1);
-        }
-        break;
-      case 7:
-        _localctx = new SubqueryExpressionContext(_localctx);
-        enterOuterAlt(_localctx, 7);
-        {
-        setState(577);
-        match(T__0);
-        setState(578);
-        query();
-        setState(579);
-        match(T__1);
-        }
-        break;
-      case 8:
-        _localctx = new ColumnReferenceContext(_localctx);
-        enterOuterAlt(_localctx, 8);
-        {
-        setState(581);
-        identifier();
-        }
-        break;
-      case 9:
-        _localctx = new DereferenceContext(_localctx);
-        enterOuterAlt(_localctx, 9);
-        {
-        setState(582);
-        qualifiedName();
-        }
-        break;
-      case 10:
-        _localctx = new ParenthesizedExpressionContext(_localctx);
-        enterOuterAlt(_localctx, 10);
-        {
-        setState(583);
-        match(T__0);
-        setState(584);
-        expression();
-        setState(585);
-        match(T__1);
         }
-        break;
+      }
+
+      setState(640);
+      match(T__1);
       }
     }
     catch (RecognitionException re) {
@@ -3977,6 +4474,27 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
       else return visitor.visitChildren(this);
     }
   }
+  public static class TimestampEscapedLiteralContext extends ConstantContext {
+    public TerminalNode TIMESTAMP_ESC() { return getToken(SqlBaseParser.TIMESTAMP_ESC, 0); }
+    public StringContext string() {
+      return getRuleContext(StringContext.class,0);
+    }
+    public TerminalNode ESC_END() { return getToken(SqlBaseParser.ESC_END, 0); }
+    public TimestampEscapedLiteralContext(ConstantContext ctx) { copyFrom(ctx); }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterTimestampEscapedLiteral(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitTimestampEscapedLiteral(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitTimestampEscapedLiteral(this);
+      else return visitor.visitChildren(this);
+    }
+  }
   public static class StringLiteralContext extends ConstantContext {
     public List<TerminalNode> STRING() { return getTokens(SqlBaseParser.STRING); }
     public TerminalNode STRING(int i) {
@@ -4014,6 +4532,48 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
       else return visitor.visitChildren(this);
     }
   }
+  public static class TimeEscapedLiteralContext extends ConstantContext {
+    public TerminalNode TIME_ESC() { return getToken(SqlBaseParser.TIME_ESC, 0); }
+    public StringContext string() {
+      return getRuleContext(StringContext.class,0);
+    }
+    public TerminalNode ESC_END() { return getToken(SqlBaseParser.ESC_END, 0); }
+    public TimeEscapedLiteralContext(ConstantContext ctx) { copyFrom(ctx); }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterTimeEscapedLiteral(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitTimeEscapedLiteral(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitTimeEscapedLiteral(this);
+      else return visitor.visitChildren(this);
+    }
+  }
+  public static class DateEscapedLiteralContext extends ConstantContext {
+    public TerminalNode DATE_ESC() { return getToken(SqlBaseParser.DATE_ESC, 0); }
+    public StringContext string() {
+      return getRuleContext(StringContext.class,0);
+    }
+    public TerminalNode ESC_END() { return getToken(SqlBaseParser.ESC_END, 0); }
+    public DateEscapedLiteralContext(ConstantContext ctx) { copyFrom(ctx); }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterDateEscapedLiteral(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitDateEscapedLiteral(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitDateEscapedLiteral(this);
+      else return visitor.visitChildren(this);
+    }
+  }
   public static class NumericLiteralContext extends ConstantContext {
     public NumberContext number() {
       return getRuleContext(NumberContext.class,0);
@@ -4052,19 +4612,40 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
       else return visitor.visitChildren(this);
     }
   }
+  public static class GuidEscapedLiteralContext extends ConstantContext {
+    public TerminalNode GUID_ESC() { return getToken(SqlBaseParser.GUID_ESC, 0); }
+    public StringContext string() {
+      return getRuleContext(StringContext.class,0);
+    }
+    public TerminalNode ESC_END() { return getToken(SqlBaseParser.ESC_END, 0); }
+    public GuidEscapedLiteralContext(ConstantContext ctx) { copyFrom(ctx); }
+    @Override
+    public void enterRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).enterGuidEscapedLiteral(this);
+    }
+    @Override
+    public void exitRule(ParseTreeListener listener) {
+      if ( listener instanceof SqlBaseListener ) ((SqlBaseListener)listener).exitGuidEscapedLiteral(this);
+    }
+    @Override
+    public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
+      if ( visitor instanceof SqlBaseVisitor ) return ((SqlBaseVisitor<? extends T>)visitor).visitGuidEscapedLiteral(this);
+      else return visitor.visitChildren(this);
+    }
+  }
 
   public final ConstantContext constant() throws RecognitionException {
     ConstantContext _localctx = new ConstantContext(_ctx, getState());
-    enterRule(_localctx, 54, RULE_constant);
+    enterRule(_localctx, 70, RULE_constant);
     try {
       int _alt;
-      setState(598);
+      setState(667);
       switch (_input.LA(1)) {
       case NULL:
         _localctx = new NullLiteralContext(_localctx);
         enterOuterAlt(_localctx, 1);
         {
-        setState(589);
+        setState(642);
         match(NULL);
         }
         break;
@@ -4073,7 +4654,7 @@ public final ConstantContext constant() throws RecognitionException {
         _localctx = new NumericLiteralContext(_localctx);
         enterOuterAlt(_localctx, 2);
         {
-        setState(590);
+        setState(643);
         number();
         }
         break;
@@ -4082,7 +4663,7 @@ public final ConstantContext constant() throws RecognitionException {
         _localctx = new BooleanLiteralContext(_localctx);
         enterOuterAlt(_localctx, 3);
         {
-        setState(591);
+        setState(644);
         booleanValue();
         }
         break;
@@ -4090,7 +4671,7 @@ public final ConstantContext constant() throws RecognitionException {
         _localctx = new StringLiteralContext(_localctx);
         enterOuterAlt(_localctx, 4);
         {
-        setState(593); 
+        setState(646); 
         _errHandler.sync(this);
         _alt = 1;
         do {
@@ -4098,7 +4679,7 @@ public final ConstantContext constant() throws RecognitionException {
           case 1:
             {
             {
-            setState(592);
+            setState(645);
             match(STRING);
             }
             }
@@ -4106,9 +4687,9 @@ public final ConstantContext constant() throws RecognitionException {
           default:
             throw new NoViableAltException(this);
           }
-          setState(595); 
+          setState(648); 
           _errHandler.sync(this);
-          _alt = getInterpreter().adaptivePredict(_input,84,_ctx);
+          _alt = getInterpreter().adaptivePredict(_input,89,_ctx);
         } while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER );
         }
         break;
@@ -4116,10 +4697,58 @@ public final ConstantContext constant() throws RecognitionException {
         _localctx = new ParamLiteralContext(_localctx);
         enterOuterAlt(_localctx, 5);
         {
-        setState(597);
+        setState(650);
         match(PARAM);
         }
         break;
+      case DATE_ESC:
+        _localctx = new DateEscapedLiteralContext(_localctx);
+        enterOuterAlt(_localctx, 6);
+        {
+        setState(651);
+        match(DATE_ESC);
+        setState(652);
+        string();
+        setState(653);
+        match(ESC_END);
+        }
+        break;
+      case TIME_ESC:
+        _localctx = new TimeEscapedLiteralContext(_localctx);
+        enterOuterAlt(_localctx, 7);
+        {
+        setState(655);
+        match(TIME_ESC);
+        setState(656);
+        string();
+        setState(657);
+        match(ESC_END);
+        }
+        break;
+      case TIMESTAMP_ESC:
+        _localctx = new TimestampEscapedLiteralContext(_localctx);
+        enterOuterAlt(_localctx, 8);
+        {
+        setState(659);
+        match(TIMESTAMP_ESC);
+        setState(660);
+        string();
+        setState(661);
+        match(ESC_END);
+        }
+        break;
+      case GUID_ESC:
+        _localctx = new GuidEscapedLiteralContext(_localctx);
+        enterOuterAlt(_localctx, 9);
+        {
+        setState(663);
+        match(GUID_ESC);
+        setState(664);
+        string();
+        setState(665);
+        match(ESC_END);
+        }
+        break;
       default:
         throw new NoViableAltException(this);
       }
@@ -4163,14 +4792,14 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final ComparisonOperatorContext comparisonOperator() throws RecognitionException {
     ComparisonOperatorContext _localctx = new ComparisonOperatorContext(_ctx, getState());
-    enterRule(_localctx, 56, RULE_comparisonOperator);
+    enterRule(_localctx, 72, RULE_comparisonOperator);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(600);
+      setState(669);
       _la = _input.LA(1);
-      if ( !(((((_la - 72)) & ~0x3f) == 0 && ((1L << (_la - 72)) & ((1L << (EQ - 72)) | (1L << (NEQ - 72)) | (1L << (LT - 72)) | (1L << (LTE - 72)) | (1L << (GT - 72)) | (1L << (GTE - 72)))) != 0)) ) {
+      if ( !(((((_la - 80)) & ~0x3f) == 0 && ((1L << (_la - 80)) & ((1L << (EQ - 80)) | (1L << (NEQ - 80)) | (1L << (LT - 80)) | (1L << (LTE - 80)) | (1L << (GT - 80)) | (1L << (GTE - 80)))) != 0)) ) {
       _errHandler.recoverInline(this);
       } else {
         consume();
@@ -4212,12 +4841,12 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final BooleanValueContext booleanValue() throws RecognitionException {
     BooleanValueContext _localctx = new BooleanValueContext(_ctx, getState());
-    enterRule(_localctx, 58, RULE_booleanValue);
+    enterRule(_localctx, 74, RULE_booleanValue);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(602);
+      setState(671);
       _la = _input.LA(1);
       if ( !(_la==FALSE || _la==TRUE) ) {
       _errHandler.recoverInline(this);
@@ -4270,12 +4899,12 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final DataTypeContext dataType() throws RecognitionException {
     DataTypeContext _localctx = new DataTypeContext(_ctx, getState());
-    enterRule(_localctx, 60, RULE_dataType);
+    enterRule(_localctx, 76, RULE_dataType);
     try {
       _localctx = new PrimitiveDataTypeContext(_localctx);
       enterOuterAlt(_localctx, 1);
       {
-      setState(604);
+      setState(673);
       identifier();
       }
     }
@@ -4322,30 +4951,30 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final QualifiedNameContext qualifiedName() throws RecognitionException {
     QualifiedNameContext _localctx = new QualifiedNameContext(_ctx, getState());
-    enterRule(_localctx, 62, RULE_qualifiedName);
+    enterRule(_localctx, 78, RULE_qualifiedName);
     try {
       int _alt;
       enterOuterAlt(_localctx, 1);
       {
-      setState(611);
+      setState(680);
       _errHandler.sync(this);
-      _alt = getInterpreter().adaptivePredict(_input,86,_ctx);
+      _alt = getInterpreter().adaptivePredict(_input,91,_ctx);
       while ( _alt!=2 && _alt!=org.antlr.v4.runtime.atn.ATN.INVALID_ALT_NUMBER ) {
         if ( _alt==1 ) {
           {
           {
-          setState(606);
+          setState(675);
           identifier();
-          setState(607);
+          setState(676);
           match(DOT);
           }
           } 
         }
-        setState(613);
+        setState(682);
         _errHandler.sync(this);
-        _alt = getInterpreter().adaptivePredict(_input,86,_ctx);
+        _alt = getInterpreter().adaptivePredict(_input,91,_ctx);
       }
-      setState(614);
+      setState(683);
       identifier();
       }
     }
@@ -4388,15 +5017,15 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final IdentifierContext identifier() throws RecognitionException {
     IdentifierContext _localctx = new IdentifierContext(_ctx, getState());
-    enterRule(_localctx, 64, RULE_identifier);
+    enterRule(_localctx, 80, RULE_identifier);
     try {
-      setState(618);
+      setState(687);
       switch (_input.LA(1)) {
       case QUOTED_IDENTIFIER:
       case BACKQUOTED_IDENTIFIER:
         enterOuterAlt(_localctx, 1);
         {
-        setState(616);
+        setState(685);
         quoteIdentifier();
         }
         break;
@@ -4429,7 +5058,7 @@ public final IdentifierContext identifier() throws RecognitionException {
       case DIGIT_IDENTIFIER:
         enterOuterAlt(_localctx, 2);
         {
-        setState(617);
+        setState(686);
         unquoteIdentifier();
         }
         break;
@@ -4479,46 +5108,46 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final TableIdentifierContext tableIdentifier() throws RecognitionException {
     TableIdentifierContext _localctx = new TableIdentifierContext(_ctx, getState());
-    enterRule(_localctx, 66, RULE_tableIdentifier);
+    enterRule(_localctx, 82, RULE_tableIdentifier);
     int _la;
     try {
-      setState(632);
+      setState(701);
       _errHandler.sync(this);
-      switch ( getInterpreter().adaptivePredict(_input,90,_ctx) ) {
+      switch ( getInterpreter().adaptivePredict(_input,95,_ctx) ) {
       case 1:
         enterOuterAlt(_localctx, 1);
         {
-        setState(623);
+        setState(692);
         _la = _input.LA(1);
         if ((((_la) & ~0x3f) == 0 && ((1L << _la) & ((1L << ANALYZE) | (1L << ANALYZED) | (1L << CATALOGS) | (1L << COLUMNS) | (1L << DEBUG) | (1L << EXECUTABLE) | (1L << EXPLAIN) | (1L << FORMAT) | (1L << FUNCTIONS) | (1L << GRAPHVIZ) | (1L << MAPPED) | (1L << OPTIMIZED) | (1L << PARSED) | (1L << PHYSICAL) | (1L << PLAN) | (1L << RLIKE) | (1L << QUERY) | (1L << SCHEMAS) | (1L << SHOW) | (1L << SYS) | (1L << TABLES))) != 0) || ((((_la - 64)) & ~0x3f) == 0 && ((1L << (_la - 64)) & ((1L << (TEXT - 64)) | (1L << (TYPE - 64)) | (1L << (TYPES - 64)) | (1L << (VERIFY - 64)) | (1L << (IDENTIFIER - 64)) | (1L << (DIGIT_IDENTIFIER - 64)) | (1L << (QUOTED_IDENTIFIER - 64)) | (1L << (BACKQUOTED_IDENTIFIER - 64)))) != 0)) {
           {
-          setState(620);
+          setState(689);
           ((TableIdentifierContext)_localctx).catalog = identifier();
-          setState(621);
+          setState(690);
           match(T__3);
           }
         }
 
-        setState(625);
+        setState(694);
         match(TABLE_IDENTIFIER);
         }
         break;
       case 2:
         enterOuterAlt(_localctx, 2);
         {
-        setState(629);
+        setState(698);
         _errHandler.sync(this);
-        switch ( getInterpreter().adaptivePredict(_input,89,_ctx) ) {
+        switch ( getInterpreter().adaptivePredict(_input,94,_ctx) ) {
         case 1:
           {
-          setState(626);
+          setState(695);
           ((TableIdentifierContext)_localctx).catalog = identifier();
-          setState(627);
+          setState(696);
           match(T__3);
           }
           break;
         }
-        setState(631);
+        setState(700);
         ((TableIdentifierContext)_localctx).name = identifier();
         }
         break;
@@ -4583,15 +5212,15 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final QuoteIdentifierContext quoteIdentifier() throws RecognitionException {
     QuoteIdentifierContext _localctx = new QuoteIdentifierContext(_ctx, getState());
-    enterRule(_localctx, 68, RULE_quoteIdentifier);
+    enterRule(_localctx, 84, RULE_quoteIdentifier);
     try {
-      setState(636);
+      setState(705);
       switch (_input.LA(1)) {
       case QUOTED_IDENTIFIER:
         _localctx = new QuotedIdentifierContext(_localctx);
         enterOuterAlt(_localctx, 1);
         {
-        setState(634);
+        setState(703);
         match(QUOTED_IDENTIFIER);
         }
         break;
@@ -4599,7 +5228,7 @@ public final QuoteIdentifierContext quoteIdentifier() throws RecognitionExceptio
         _localctx = new BackQuotedIdentifierContext(_localctx);
         enterOuterAlt(_localctx, 2);
         {
-        setState(635);
+        setState(704);
         match(BACKQUOTED_IDENTIFIER);
         }
         break;
@@ -4669,15 +5298,15 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final UnquoteIdentifierContext unquoteIdentifier() throws RecognitionException {
     UnquoteIdentifierContext _localctx = new UnquoteIdentifierContext(_ctx, getState());
-    enterRule(_localctx, 70, RULE_unquoteIdentifier);
+    enterRule(_localctx, 86, RULE_unquoteIdentifier);
     try {
-      setState(641);
+      setState(710);
       switch (_input.LA(1)) {
       case IDENTIFIER:
         _localctx = new UnquotedIdentifierContext(_localctx);
         enterOuterAlt(_localctx, 1);
         {
-        setState(638);
+        setState(707);
         match(IDENTIFIER);
         }
         break;
@@ -4709,7 +5338,7 @@ public final UnquoteIdentifierContext unquoteIdentifier() throws RecognitionExce
         _localctx = new UnquotedIdentifierContext(_localctx);
         enterOuterAlt(_localctx, 2);
         {
-        setState(639);
+        setState(708);
         nonReserved();
         }
         break;
@@ -4717,7 +5346,7 @@ public final UnquoteIdentifierContext unquoteIdentifier() throws RecognitionExce
         _localctx = new DigitIdentifierContext(_localctx);
         enterOuterAlt(_localctx, 3);
         {
-        setState(640);
+        setState(709);
         match(DIGIT_IDENTIFIER);
         }
         break;
@@ -4784,15 +5413,15 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final NumberContext number() throws RecognitionException {
     NumberContext _localctx = new NumberContext(_ctx, getState());
-    enterRule(_localctx, 72, RULE_number);
+    enterRule(_localctx, 88, RULE_number);
     try {
-      setState(645);
+      setState(714);
       switch (_input.LA(1)) {
       case DECIMAL_VALUE:
         _localctx = new DecimalLiteralContext(_localctx);
         enterOuterAlt(_localctx, 1);
         {
-        setState(643);
+        setState(712);
         match(DECIMAL_VALUE);
         }
         break;
@@ -4800,7 +5429,7 @@ public final NumberContext number() throws RecognitionException {
         _localctx = new IntegerLiteralContext(_localctx);
         enterOuterAlt(_localctx, 2);
         {
-        setState(644);
+        setState(713);
         match(INTEGER_VALUE);
         }
         break;
@@ -4843,12 +5472,12 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final StringContext string() throws RecognitionException {
     StringContext _localctx = new StringContext(_ctx, getState());
-    enterRule(_localctx, 74, RULE_string);
+    enterRule(_localctx, 90, RULE_string);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(647);
+      setState(716);
       _la = _input.LA(1);
       if ( !(_la==PARAM || _la==STRING) ) {
       _errHandler.recoverInline(this);
@@ -4915,12 +5544,12 @@ public <T> T accept(ParseTreeVisitor<? extends T> visitor) {
 
   public final NonReservedContext nonReserved() throws RecognitionException {
     NonReservedContext _localctx = new NonReservedContext(_ctx, getState());
-    enterRule(_localctx, 76, RULE_nonReserved);
+    enterRule(_localctx, 92, RULE_nonReserved);
     int _la;
     try {
       enterOuterAlt(_localctx, 1);
       {
-      setState(649);
+      setState(718);
       _la = _input.LA(1);
       if ( !(((((_la - 6)) & ~0x3f) == 0 && ((1L << (_la - 6)) & ((1L << (ANALYZE - 6)) | (1L << (ANALYZED - 6)) | (1L << (CATALOGS - 6)) | (1L << (COLUMNS - 6)) | (1L << (DEBUG - 6)) | (1L << (EXECUTABLE - 6)) | (1L << (EXPLAIN - 6)) | (1L << (FORMAT - 6)) | (1L << (FUNCTIONS - 6)) | (1L << (GRAPHVIZ - 6)) | (1L << (MAPPED - 6)) | (1L << (OPTIMIZED - 6)) | (1L << (PARSED - 6)) | (1L << (PHYSICAL - 6)) | (1L << (PLAN - 6)) | (1L << (RLIKE - 6)) | (1L << (QUERY - 6)) | (1L << (SCHEMAS - 6)) | (1L << (SHOW - 6)) | (1L << (SYS - 6)) | (1L << (TABLES - 6)) | (1L << (TEXT - 6)) | (1L << (TYPE - 6)) | (1L << (TYPES - 6)) | (1L << (VERIFY - 6)))) != 0)) ) {
       _errHandler.recoverInline(this);
@@ -4942,9 +5571,9 @@ public final NonReservedContext nonReserved() throws RecognitionException {
 
   public boolean sempred(RuleContext _localctx, int ruleIndex, int predIndex) {
     switch (ruleIndex) {
-    case 21:
+    case 22:
       return booleanExpression_sempred((BooleanExpressionContext)_localctx, predIndex);
-    case 25:
+    case 27:
       return valueExpression_sempred((ValueExpressionContext)_localctx, predIndex);
     }
     return true;
@@ -4971,266 +5600,291 @@ private boolean valueExpression_sempred(ValueExpressionContext _localctx, int pr
   }
 
   public static final String _serializedATN =
-    "\3\u0430\ud6d1\u8206\uad2d\u4417\uaef1\u8d80\uaadd\3d\u028e\4\2\t\2\4"+
+    "\3\u0430\ud6d1\u8206\uad2d\u4417\uaef1\u8d80\uaadd\3l\u02d3\4\2\t\2\4"+
     "\3\t\3\4\4\t\4\4\5\t\5\4\6\t\6\4\7\t\7\4\b\t\b\4\t\t\t\4\n\t\n\4\13\t"+
     "\13\4\f\t\f\4\r\t\r\4\16\t\16\4\17\t\17\4\20\t\20\4\21\t\21\4\22\t\22"+
     "\4\23\t\23\4\24\t\24\4\25\t\25\4\26\t\26\4\27\t\27\4\30\t\30\4\31\t\31"+
     "\4\32\t\32\4\33\t\33\4\34\t\34\4\35\t\35\4\36\t\36\4\37\t\37\4 \t \4!"+
-    "\t!\4\"\t\"\4#\t#\4$\t$\4%\t%\4&\t&\4\'\t\'\4(\t(\3\2\3\2\3\2\3\3\3\3"+
-    "\3\3\3\4\3\4\3\4\3\4\3\4\3\4\3\4\3\4\3\4\7\4`\n\4\f\4\16\4c\13\4\3\4\5"+
-    "\4f\n\4\3\4\3\4\3\4\3\4\3\4\3\4\3\4\7\4o\n\4\f\4\16\4r\13\4\3\4\5\4u\n"+
-    "\4\3\4\3\4\3\4\3\4\5\4{\n\4\3\4\5\4~\n\4\3\4\3\4\3\4\3\4\3\4\3\4\3\4\3"+
-    "\4\3\4\5\4\u0089\n\4\3\4\5\4\u008c\n\4\3\4\3\4\3\4\3\4\3\4\3\4\3\4\3\4"+
-    "\5\4\u0096\n\4\3\4\5\4\u0099\n\4\3\4\5\4\u009c\n\4\3\4\5\4\u009f\n\4\3"+
-    "\4\3\4\3\4\3\4\7\4\u00a5\n\4\f\4\16\4\u00a8\13\4\5\4\u00aa\n\4\3\4\3\4"+
-    "\3\4\3\4\5\4\u00b0\n\4\3\4\3\4\5\4\u00b4\n\4\3\4\5\4\u00b7\n\4\3\4\5\4"+
-    "\u00ba\n\4\3\4\5\4\u00bd\n\4\3\4\3\4\3\4\3\4\3\4\5\4\u00c4\n\4\3\5\3\5"+
-    "\3\5\3\5\7\5\u00ca\n\5\f\5\16\5\u00cd\13\5\5\5\u00cf\n\5\3\5\3\5\3\6\3"+
-    "\6\3\6\3\6\3\6\3\6\7\6\u00d9\n\6\f\6\16\6\u00dc\13\6\5\6\u00de\n\6\3\6"+
-    "\3\6\5\6\u00e2\n\6\3\7\3\7\3\7\3\7\3\7\5\7\u00e9\n\7\3\b\3\b\5\b\u00ed"+
-    "\n\b\3\t\3\t\5\t\u00f1\n\t\3\t\3\t\3\t\7\t\u00f6\n\t\f\t\16\t\u00f9\13"+
-    "\t\3\t\5\t\u00fc\n\t\3\t\3\t\5\t\u0100\n\t\3\t\3\t\3\t\5\t\u0105\n\t\3"+
-    "\t\3\t\5\t\u0109\n\t\3\n\3\n\3\n\3\n\7\n\u010f\n\n\f\n\16\n\u0112\13\n"+
-    "\3\13\5\13\u0115\n\13\3\13\3\13\3\13\7\13\u011a\n\13\f\13\16\13\u011d"+
-    "\13\13\3\f\3\f\3\r\3\r\3\r\3\r\7\r\u0125\n\r\f\r\16\r\u0128\13\r\5\r\u012a"+
-    "\n\r\3\r\3\r\5\r\u012e\n\r\3\16\3\16\3\16\3\16\3\16\3\16\3\17\3\17\3\20"+
-    "\3\20\5\20\u013a\n\20\3\20\5\20\u013d\n\20\3\21\3\21\7\21\u0141\n\21\f"+
-    "\21\16\21\u0144\13\21\3\22\3\22\3\22\3\22\5\22\u014a\n\22\3\22\3\22\3"+
-    "\22\3\22\3\22\5\22\u0151\n\22\3\23\5\23\u0154\n\23\3\23\3\23\5\23\u0158"+
-    "\n\23\3\23\3\23\5\23\u015c\n\23\3\23\3\23\5\23\u0160\n\23\5\23\u0162\n"+
-    "\23\3\24\3\24\3\24\3\24\3\24\3\24\3\24\7\24\u016b\n\24\f\24\16\24\u016e"+
-    "\13\24\3\24\3\24\5\24\u0172\n\24\3\25\3\25\5\25\u0176\n\25\3\25\5\25\u0179"+
-    "\n\25\3\25\3\25\3\25\3\25\5\25\u017f\n\25\3\25\5\25\u0182\n\25\3\25\3"+
-    "\25\3\25\3\25\5\25\u0188\n\25\3\25\5\25\u018b\n\25\5\25\u018d\n\25\3\26"+
-    "\3\26\3\27\3\27\3\27\3\27\3\27\3\27\3\27\3\27\3\27\3\27\3\27\3\27\3\27"+
-    "\7\27\u019e\n\27\f\27\16\27\u01a1\13\27\3\27\3\27\3\27\3\27\3\27\3\27"+
-    "\3\27\3\27\3\27\7\27\u01ac\n\27\f\27\16\27\u01af\13\27\3\27\3\27\3\27"+
-    "\3\27\3\27\3\27\3\27\3\27\3\27\7\27\u01ba\n\27\f\27\16\27\u01bd\13\27"+
-    "\3\27\3\27\3\27\5\27\u01c2\n\27\3\27\3\27\3\27\3\27\3\27\3\27\7\27\u01ca"+
-    "\n\27\f\27\16\27\u01cd\13\27\3\30\3\30\5\30\u01d1\n\30\3\31\5\31\u01d4"+
-    "\n\31\3\31\3\31\3\31\3\31\3\31\3\31\5\31\u01dc\n\31\3\31\3\31\3\31\3\31"+
-    "\3\31\7\31\u01e3\n\31\f\31\16\31\u01e6\13\31\3\31\3\31\3\31\5\31\u01eb"+
-    "\n\31\3\31\3\31\3\31\3\31\3\31\3\31\5\31\u01f3\n\31\3\31\3\31\3\31\5\31"+
-    "\u01f8\n\31\3\31\3\31\3\31\3\31\5\31\u01fe\n\31\3\31\5\31\u0201\n\31\3"+
-    "\32\3\32\3\32\5\32\u0206\n\32\3\33\3\33\3\33\3\33\5\33\u020c\n\33\3\33"+
-    "\3\33\3\33\3\33\3\33\3\33\3\33\3\33\3\33\3\33\7\33\u0218\n\33\f\33\16"+
-    "\33\u021b\13\33\3\34\3\34\3\34\3\34\3\34\3\34\3\34\3\34\3\34\3\34\3\34"+
-    "\3\34\3\34\3\34\3\34\3\34\3\34\3\34\3\34\5\34\u0230\n\34\3\34\3\34\3\34"+
-    "\3\34\5\34\u0236\n\34\3\34\3\34\3\34\7\34\u023b\n\34\f\34\16\34\u023e"+
-    "\13\34\5\34\u0240\n\34\3\34\3\34\3\34\3\34\3\34\3\34\3\34\3\34\3\34\3"+
-    "\34\3\34\3\34\5\34\u024e\n\34\3\35\3\35\3\35\3\35\6\35\u0254\n\35\r\35"+
-    "\16\35\u0255\3\35\5\35\u0259\n\35\3\36\3\36\3\37\3\37\3 \3 \3!\3!\3!\7"+
-    "!\u0264\n!\f!\16!\u0267\13!\3!\3!\3\"\3\"\5\"\u026d\n\"\3#\3#\3#\5#\u0272"+
-    "\n#\3#\3#\3#\3#\5#\u0278\n#\3#\5#\u027b\n#\3$\3$\5$\u027f\n$\3%\3%\3%"+
-    "\5%\u0284\n%\3&\3&\5&\u0288\n&\3\'\3\'\3(\3(\3(\2\4,\64)\2\4\6\b\n\f\16"+
-    "\20\22\24\26\30\32\34\36 \"$&(*,.\60\62\64\668:<>@BDFHJLN\2\20\b\2\7\7"+
-    "\t\t\31\31,,\62\62\66\66\4\2\"\"BB\4\2\t\t\62\62\4\2\37\37%%\3\2\25\26"+
-    "\4\2\7\7YY\4\2\r\r\25\25\4\2\7\7\27\27\3\2PQ\3\2RT\3\2JO\4\2\35\35CC\3"+
-    "\2WX\20\2\b\t\22\24\31\31\33\33\36\36!\",,\62\62\668:<>?ABDEGG\u02e8\2"+
-    "P\3\2\2\2\4S\3\2\2\2\6\u00c3\3\2\2\2\b\u00ce\3\2\2\2\n\u00d2\3\2\2\2\f"+
-    "\u00e8\3\2\2\2\16\u00ea\3\2\2\2\20\u00ee\3\2\2\2\22\u010a\3\2\2\2\24\u0114"+
-    "\3\2\2\2\26\u011e\3\2\2\2\30\u012d\3\2\2\2\32\u012f\3\2\2\2\34\u0135\3"+
-    "\2\2\2\36\u0137\3\2\2\2 \u013e\3\2\2\2\"\u0150\3\2\2\2$\u0161\3\2\2\2"+
-    "&\u0171\3\2\2\2(\u018c\3\2\2\2*\u018e\3\2\2\2,\u01c1\3\2\2\2.\u01ce\3"+
-    "\2\2\2\60\u0200\3\2\2\2\62\u0202\3\2\2\2\64\u020b\3\2\2\2\66\u024d\3\2"+
-    "\2\28\u0258\3\2\2\2:\u025a\3\2\2\2<\u025c\3\2\2\2>\u025e\3\2\2\2@\u0265"+
-    "\3\2\2\2B\u026c\3\2\2\2D\u027a\3\2\2\2F\u027e\3\2\2\2H\u0283\3\2\2\2J"+
-    "\u0287\3\2\2\2L\u0289\3\2\2\2N\u028b\3\2\2\2PQ\5\6\4\2QR\7\2\2\3R\3\3"+
-    "\2\2\2ST\5*\26\2TU\7\2\2\3U\5\3\2\2\2V\u00c4\5\b\5\2We\7\33\2\2Xa\7\3"+
-    "\2\2YZ\78\2\2Z`\t\2\2\2[\\\7\36\2\2\\`\t\3\2\2]^\7G\2\2^`\5<\37\2_Y\3"+
-    "\2\2\2_[\3\2\2\2_]\3\2\2\2`c\3\2\2\2a_\3\2\2\2ab\3\2\2\2bd\3\2\2\2ca\3"+
-    "\2\2\2df\7\4\2\2eX\3\2\2\2ef\3\2\2\2fg\3\2\2\2g\u00c4\5\6\4\2ht\7\24\2"+
-    "\2ip\7\3\2\2jk\78\2\2ko\t\4\2\2lm\7\36\2\2mo\t\3\2\2nj\3\2\2\2nl\3\2\2"+
-    "\2or\3\2\2\2pn\3\2\2\2pq\3\2\2\2qs\3\2\2\2rp\3\2\2\2su\7\4\2\2ti\3\2\2"+
-    "\2tu\3\2\2\2uv\3\2\2\2v\u00c4\5\6\4\2wx\7>\2\2x}\7A\2\2y{\7*\2\2zy\3\2"+
-    "\2\2z{\3\2\2\2{|\3\2\2\2|~\5\62\32\2}z\3\2\2\2}~\3\2\2\2~\u00c4\3\2\2"+
-    "\2\177\u0080\7>\2\2\u0080\u0081\7\23\2\2\u0081\u0082\t\5\2\2\u0082\u00c4"+
-    "\5D#\2\u0083\u0084\t\6\2\2\u0084\u00c4\5D#\2\u0085\u0086\7>\2\2\u0086"+
-    "\u008b\7!\2\2\u0087\u0089\7*\2\2\u0088\u0087\3\2\2\2\u0088\u0089\3\2\2"+
-    "\2\u0089\u008a\3\2\2\2\u008a\u008c\5\62\32\2\u008b\u0088\3\2\2\2\u008b"+
-    "\u008c\3\2\2\2\u008c\u00c4\3\2\2\2\u008d\u008e\7>\2\2\u008e\u00c4\7<\2"+
-    "\2\u008f\u0090\7?\2\2\u0090\u00c4\7\22\2\2\u0091\u0092\7?\2\2\u0092\u0098"+
-    "\7A\2\2\u0093\u0095\7\21\2\2\u0094\u0096\7*\2\2\u0095\u0094\3\2\2\2\u0095"+
-    "\u0096\3\2\2\2\u0096\u0097\3\2\2\2\u0097\u0099\5\62\32\2\u0098\u0093\3"+
-    "\2\2\2\u0098\u0099\3\2\2\2\u0099\u009e\3\2\2\2\u009a\u009c\7*\2\2\u009b"+
-    "\u009a\3\2\2\2\u009b\u009c\3\2\2\2\u009c\u009d\3\2\2\2\u009d\u009f\5\62"+
-    "\32\2\u009e\u009b\3\2\2\2\u009e\u009f\3\2\2\2\u009f\u00a9\3\2\2\2\u00a0"+
-    "\u00a1\7D\2\2\u00a1\u00a6\5L\'\2\u00a2\u00a3\7\5\2\2\u00a3\u00a5\5L\'"+
-    "\2\u00a4\u00a2\3\2\2\2\u00a5\u00a8\3\2\2\2\u00a6\u00a4\3\2\2\2\u00a6\u00a7"+
-    "\3\2\2\2\u00a7\u00aa\3\2\2\2\u00a8\u00a6\3\2\2\2\u00a9\u00a0\3\2\2\2\u00a9"+
-    "\u00aa\3\2\2\2\u00aa\u00c4\3\2\2\2\u00ab\u00ac\7?\2\2\u00ac\u00af\7\23"+
-    "\2\2\u00ad\u00ae\7\21\2\2\u00ae\u00b0\5L\'\2\u00af\u00ad\3\2\2\2\u00af"+
-    "\u00b0\3\2\2\2\u00b0\u00b6\3\2\2\2\u00b1\u00b3\7@\2\2\u00b2\u00b4\7*\2"+
-    "\2\u00b3\u00b2\3\2\2\2\u00b3\u00b4\3\2\2\2\u00b4\u00b5\3\2\2\2\u00b5\u00b7"+
-    "\5\62\32\2\u00b6\u00b1\3\2\2\2\u00b6\u00b7\3\2\2\2\u00b7\u00bc\3\2\2\2"+
-    "\u00b8\u00ba\7*\2\2\u00b9\u00b8\3\2\2\2\u00b9\u00ba\3\2\2\2\u00ba\u00bb"+
-    "\3\2\2\2\u00bb\u00bd\5\62\32\2\u00bc\u00b9\3\2\2\2\u00bc\u00bd\3\2\2\2"+
-    "\u00bd\u00c4\3\2\2\2\u00be\u00bf\7?\2\2\u00bf\u00c4\7E\2\2\u00c0\u00c1"+
-    "\7?\2\2\u00c1\u00c2\7@\2\2\u00c2\u00c4\7E\2\2\u00c3V\3\2\2\2\u00c3W\3"+
-    "\2\2\2\u00c3h\3\2\2\2\u00c3w\3\2\2\2\u00c3\177\3\2\2\2\u00c3\u0083\3\2"+
-    "\2\2\u00c3\u0085\3\2\2\2\u00c3\u008d\3\2\2\2\u00c3\u008f\3\2\2\2\u00c3"+
-    "\u0091\3\2\2\2\u00c3\u00ab\3\2\2\2\u00c3\u00be\3\2\2\2\u00c3\u00c0\3\2"+
-    "\2\2\u00c4\7\3\2\2\2\u00c5\u00c6\7I\2\2\u00c6\u00cb\5\32\16\2\u00c7\u00c8"+
-    "\7\5\2\2\u00c8\u00ca\5\32\16\2\u00c9\u00c7\3\2\2\2\u00ca\u00cd\3\2\2\2"+
-    "\u00cb\u00c9\3\2\2\2\u00cb\u00cc\3\2\2\2\u00cc\u00cf\3\2\2\2\u00cd\u00cb"+
-    "\3\2\2\2\u00ce\u00c5\3\2\2\2\u00ce\u00cf\3\2\2\2\u00cf\u00d0\3\2\2\2\u00d0"+
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+    "> \2\u0253\u0254\7Q\2\2\u0254\u0256\3\2\2\2\u0255\u0250\3\2\2\2\u0255"+
+    "\u0251\3\2\2\2\u0256=\3\2\2\2\u0257\u0258\7\20\2\2\u0258\u0259\7\3\2\2"+
+    "\u0259\u025a\5,\27\2\u025a\u025b\7\f\2\2\u025b\u025c\5N(\2\u025c\u025d"+
+    "\7\4\2\2\u025d?\3\2\2\2\u025e\u0264\5B\"\2\u025f\u0260\7K\2\2\u0260\u0261"+
+    "\5B\"\2\u0261\u0262\7Q\2\2\u0262\u0264\3\2\2\2\u0263\u025e\3\2\2\2\u0263"+
+    "\u025f\3\2\2\2\u0264A\3\2\2\2\u0265\u0266\7\34\2\2\u0266\u0267\7\3\2\2"+
+    "\u0267\u0268\5R*\2\u0268\u0269\7\37\2\2\u0269\u026a\58\35\2\u026a\u026b"+
+    "\7\4\2\2\u026bC\3\2\2\2\u026c\u0272\5F$\2\u026d\u026e\7K\2\2\u026e\u026f"+
+    "\5F$\2\u026f\u0270\7Q\2\2\u0270\u0272\3\2\2\2\u0271\u026c\3\2\2\2\u0271"+
+    "\u026d\3\2\2\2\u0272E\3\2\2\2\u0273\u0274\5R*\2\u0274\u0280\7\3\2\2\u0275"+
+    "\u0277\5\36\20\2\u0276\u0275\3\2\2\2\u0276\u0277\3\2\2\2\u0277\u0278\3"+
+    "\2\2\2\u0278\u027d\5,\27\2\u0279\u027a\7\5\2\2\u027a\u027c\5,\27\2\u027b"+
+    "\u0279\3\2\2\2\u027c\u027f\3\2\2\2\u027d\u027b\3\2\2\2\u027d\u027e\3\2"+
+    "\2\2\u027e\u0281\3\2\2\2\u027f\u027d\3\2\2\2\u0280\u0276\3\2\2\2\u0280"+
+    "\u0281\3\2\2\2\u0281\u0282\3\2\2\2\u0282\u0283\7\4\2\2\u0283G\3\2\2\2"+
+    "\u0284\u029e\7\60\2\2\u0285\u029e\5Z.\2\u0286\u029e\5L\'\2\u0287\u0289"+
+    "\7`\2\2\u0288\u0287\3\2\2\2\u0289\u028a\3\2\2\2\u028a\u0288\3\2\2\2\u028a"+
+    "\u028b\3\2\2\2\u028b\u029e\3\2\2\2\u028c\u029e\7_\2\2\u028d\u028e\7M\2"+
+    "\2\u028e\u028f\5\\/\2\u028f\u0290\7Q\2\2\u0290\u029e\3\2\2\2\u0291\u0292"+
+    "\7N\2\2\u0292\u0293\5\\/\2\u0293\u0294\7Q\2\2\u0294\u029e\3\2\2\2\u0295"+
+    "\u0296\7O\2\2\u0296\u0297\5\\/\2\u0297\u0298\7Q\2\2\u0298\u029e\3\2\2"+
+    "\2\u0299\u029a\7P\2\2\u029a\u029b\5\\/\2\u029b\u029c\7Q\2\2\u029c\u029e"+
+    "\3\2\2\2\u029d\u0284\3\2\2\2\u029d\u0285\3\2\2\2\u029d\u0286\3\2\2\2\u029d"+
+    "\u0288\3\2\2\2\u029d\u028c\3\2\2\2\u029d\u028d\3\2\2\2\u029d\u0291\3\2"+
+    "\2\2\u029d\u0295\3\2\2\2\u029d\u0299\3\2\2\2\u029eI\3\2\2\2\u029f\u02a0"+
+    "\t\f\2\2\u02a0K\3\2\2\2\u02a1\u02a2\t\r\2\2\u02a2M\3\2\2\2\u02a3\u02a4"+
+    "\5R*\2\u02a4O\3\2\2\2\u02a5\u02a6\5R*\2\u02a6\u02a7\7^\2\2\u02a7\u02a9"+
+    "\3\2\2\2\u02a8\u02a5\3\2\2\2\u02a9\u02ac\3\2\2\2\u02aa\u02a8\3\2\2\2\u02aa"+
+    "\u02ab\3\2\2\2\u02ab\u02ad\3\2\2\2\u02ac\u02aa\3\2\2\2\u02ad\u02ae\5R"+
+    "*\2\u02aeQ\3\2\2\2\u02af\u02b2\5V,\2\u02b0\u02b2\5X-\2\u02b1\u02af\3\2"+
+    "\2\2\u02b1\u02b0\3\2\2\2\u02b2S\3\2\2\2\u02b3\u02b4\5R*\2\u02b4\u02b5"+
+    "\7\6\2\2\u02b5\u02b7\3\2\2\2\u02b6\u02b3\3\2\2\2\u02b6\u02b7\3\2\2\2\u02b7"+
+    "\u02b8\3\2\2\2\u02b8\u02c0\7e\2\2\u02b9\u02ba\5R*\2\u02ba\u02bb\7\6\2"+
+    "\2\u02bb\u02bd\3\2\2\2\u02bc\u02b9\3\2\2\2\u02bc\u02bd\3\2\2\2\u02bd\u02be"+
+    "\3\2\2\2\u02be\u02c0\5R*\2\u02bf\u02b6\3\2\2\2\u02bf\u02bc\3\2\2\2\u02c0"+
+    "U\3\2\2\2\u02c1\u02c4\7f\2\2\u02c2\u02c4\7g\2\2\u02c3\u02c1\3\2\2\2\u02c3"+
+    "\u02c2\3\2\2\2\u02c4W\3\2\2\2\u02c5\u02c9\7c\2\2\u02c6\u02c9\5^\60\2\u02c7"+
+    "\u02c9\7d\2\2\u02c8\u02c5\3\2\2\2\u02c8\u02c6\3\2\2\2\u02c8\u02c7\3\2"+
+    "\2\2\u02c9Y\3\2\2\2\u02ca\u02cd\7b\2\2\u02cb\u02cd\7a\2\2\u02cc\u02ca"+
+    "\3\2\2\2\u02cc\u02cb\3\2\2\2\u02cd[\3\2\2\2\u02ce\u02cf\t\16\2\2\u02cf"+
+    "]\3\2\2\2\u02d0\u02d1\t\17\2\2\u02d1_\3\2\2\2eoqu~\u0080\u0084\u008a\u008d"+
+    "\u0098\u009b\u00a5\u00a8\u00ab\u00ae\u00b6\u00b9\u00bf\u00c3\u00c6\u00c9"+
+    "\u00cc\u00d3\u00db\u00de\u00ea\u00ed\u00f0\u00f7\u00fe\u0102\u0106\u010d"+
+    "\u0111\u0115\u011a\u011e\u0126\u012a\u0131\u013c\u013f\u0143\u014f\u0152"+
+    "\u0158\u015f\u0166\u0169\u016d\u0171\u0175\u0177\u0182\u0187\u018b\u018e"+
+    "\u0194\u0197\u019d\u01a0\u01a2\u01b5\u01c3\u01d1\u01d7\u01df\u01e1\u01e6"+
+    "\u01e9\u01f1\u01fa\u0200\u0208\u020d\u0213\u0216\u021a\u0222\u0228\u0234"+
+    "\u0236\u0240\u024e\u0255\u0263\u0271\u0276\u027d\u0280\u028a\u029d\u02aa"+
+    "\u02b1\u02b6\u02bc\u02bf\u02c3\u02c8\u02cc";
   public static final ATN _ATN =
     new ATNDeserializer().deserialize(_serializedATN.toCharArray());
   static {
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseVisitor.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseVisitor.java
index 35ce6cd0029d6..6745b3fa89ba9 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseVisitor.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlBaseVisitor.java
@@ -1,8 +1,3 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
 // ANTLR GENERATED CODE: DO NOT EDIT
 package org.elasticsearch.xpack.sql.parser;
 import org.antlr.v4.runtime.tree.ParseTreeVisitor;
@@ -123,6 +118,12 @@ interface SqlBaseVisitor<T> extends ParseTreeVisitor<T> {
    * @return the visitor result
    */
   T visitQueryNoWith(SqlBaseParser.QueryNoWithContext ctx);
+  /**
+   * Visit a parse tree produced by {@link SqlBaseParser#limitClause}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitLimitClause(SqlBaseParser.LimitClauseContext ctx);
   /**
    * Visit a parse tree produced by the {@code queryPrimaryDefault}
    * labeled alternative in {@link SqlBaseParser#queryTerm}.
@@ -311,6 +312,12 @@ interface SqlBaseVisitor<T> extends ParseTreeVisitor<T> {
    * @return the visitor result
    */
   T visitPattern(SqlBaseParser.PatternContext ctx);
+  /**
+   * Visit a parse tree produced by {@link SqlBaseParser#patternEscape}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitPatternEscape(SqlBaseParser.PatternEscapeContext ctx);
   /**
    * Visit a parse tree produced by the {@code valueExpressionDefault}
    * labeled alternative in {@link SqlBaseParser#valueExpression}.
@@ -368,12 +375,12 @@ interface SqlBaseVisitor<T> extends ParseTreeVisitor<T> {
    */
   T visitStar(SqlBaseParser.StarContext ctx);
   /**
-   * Visit a parse tree produced by the {@code functionCall}
+   * Visit a parse tree produced by the {@code function}
    * labeled alternative in {@link SqlBaseParser#primaryExpression}.
    * @param ctx the parse tree
    * @return the visitor result
    */
-  T visitFunctionCall(SqlBaseParser.FunctionCallContext ctx);
+  T visitFunction(SqlBaseParser.FunctionContext ctx);
   /**
    * Visit a parse tree produced by the {@code subqueryExpression}
    * labeled alternative in {@link SqlBaseParser#primaryExpression}.
@@ -402,6 +409,42 @@ interface SqlBaseVisitor<T> extends ParseTreeVisitor<T> {
    * @return the visitor result
    */
   T visitParenthesizedExpression(SqlBaseParser.ParenthesizedExpressionContext ctx);
+  /**
+   * Visit a parse tree produced by {@link SqlBaseParser#castExpression}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitCastExpression(SqlBaseParser.CastExpressionContext ctx);
+  /**
+   * Visit a parse tree produced by {@link SqlBaseParser#castTemplate}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitCastTemplate(SqlBaseParser.CastTemplateContext ctx);
+  /**
+   * Visit a parse tree produced by {@link SqlBaseParser#extractExpression}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitExtractExpression(SqlBaseParser.ExtractExpressionContext ctx);
+  /**
+   * Visit a parse tree produced by {@link SqlBaseParser#extractTemplate}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitExtractTemplate(SqlBaseParser.ExtractTemplateContext ctx);
+  /**
+   * Visit a parse tree produced by {@link SqlBaseParser#functionExpression}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitFunctionExpression(SqlBaseParser.FunctionExpressionContext ctx);
+  /**
+   * Visit a parse tree produced by {@link SqlBaseParser#functionTemplate}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitFunctionTemplate(SqlBaseParser.FunctionTemplateContext ctx);
   /**
    * Visit a parse tree produced by the {@code nullLiteral}
    * labeled alternative in {@link SqlBaseParser#constant}.
@@ -437,6 +480,34 @@ interface SqlBaseVisitor<T> extends ParseTreeVisitor<T> {
    * @return the visitor result
    */
   T visitParamLiteral(SqlBaseParser.ParamLiteralContext ctx);
+  /**
+   * Visit a parse tree produced by the {@code dateEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitDateEscapedLiteral(SqlBaseParser.DateEscapedLiteralContext ctx);
+  /**
+   * Visit a parse tree produced by the {@code timeEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitTimeEscapedLiteral(SqlBaseParser.TimeEscapedLiteralContext ctx);
+  /**
+   * Visit a parse tree produced by the {@code timestampEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitTimestampEscapedLiteral(SqlBaseParser.TimestampEscapedLiteralContext ctx);
+  /**
+   * Visit a parse tree produced by the {@code guidEscapedLiteral}
+   * labeled alternative in {@link SqlBaseParser#constant}.
+   * @param ctx the parse tree
+   * @return the visitor result
+   */
+  T visitGuidEscapedLiteral(SqlBaseParser.GuidEscapedLiteralContext ctx);
   /**
    * Visit a parse tree produced by {@link SqlBaseParser#comparisonOperator}.
    * @param ctx the parse tree
diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlParser.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlParser.java
index b7fe9178f911f..2824b5502a860 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlParser.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/SqlParser.java
@@ -33,10 +33,13 @@
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.function.BiFunction;
 import java.util.function.Function;
 
+import static java.lang.String.format;
+
 public class SqlParser {
     private static final Logger log = Loggers.getLogger(SqlParser.class);
 
@@ -102,16 +105,30 @@ private <T> T invokeParser(String sql, List<SqlTypedParamValue> params, Function
 
         if (DEBUG) {
             debug(parser);
+            tokenStream.fill();
+
+            for (Token t : tokenStream.getTokens()) {
+                String symbolicName = SqlBaseLexer.VOCABULARY.getSymbolicName(t.getType());
+                String literalName = SqlBaseLexer.VOCABULARY.getLiteralName(t.getType());
+                log.info(format(Locale.ROOT, "  %-15s '%s'",
+                        symbolicName == null ? literalName : symbolicName,
+                        t.getText()));
+            };
         }
 
         ParserRuleContext tree = parseFunction.apply(parser);
 
+        if (DEBUG) {
+            log.info("Parse tree {} " + tree.toStringTree());
+        }
+
         return visitor.apply(new AstBuilder(paramTokens), tree);
     }
 
     private void debug(SqlBaseParser parser) {
+        
         // when debugging, use the exact prediction mode (needed for diagnostics as well)
-        parser.getInterpreter().setPredictionMode(PredictionMode.LL_EXACT_AMBIG_DETECTION);
+        parser.getInterpreter().setPredictionMode(PredictionMode.SLL);
 
         parser.addParseListener(parser.new TraceListener());
 
diff --git a/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/EscapedFunctionsTests.java b/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/EscapedFunctionsTests.java
new file mode 100644
index 0000000000000..2b4766fc60b2a
--- /dev/null
+++ b/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/EscapedFunctionsTests.java
@@ -0,0 +1,225 @@
+/*
+ * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
+ * or more contributor license agreements. Licensed under the Elastic License;
+ * you may not use this file except in compliance with the Elastic License.
+ */
+package org.elasticsearch.xpack.sql.parser;
+
+import org.elasticsearch.test.ESTestCase;
+import org.elasticsearch.xpack.sql.SqlIllegalArgumentException;
+import org.elasticsearch.xpack.sql.expression.Expression;
+import org.elasticsearch.xpack.sql.expression.Literal;
+import org.elasticsearch.xpack.sql.expression.UnresolvedAttribute;
+import org.elasticsearch.xpack.sql.expression.function.Function;
+import org.elasticsearch.xpack.sql.expression.function.UnresolvedFunction;
+import org.elasticsearch.xpack.sql.expression.regex.Like;
+import org.elasticsearch.xpack.sql.expression.regex.LikePattern;
+import org.elasticsearch.xpack.sql.plan.logical.Limit;
+import org.elasticsearch.xpack.sql.plan.logical.LogicalPlan;
+import org.elasticsearch.xpack.sql.plan.logical.With;
+import org.elasticsearch.xpack.sql.proto.SqlTypedParamValue;
+import org.elasticsearch.xpack.sql.type.DataType;
+import org.junit.Assert;
+
+import java.util.List;
+import java.util.Locale;
+
+import static java.lang.String.format;
+import static java.util.Arrays.asList;
+import static org.hamcrest.Matchers.instanceOf;
+import static org.hamcrest.Matchers.is;
+
+public class EscapedFunctionsTests extends ESTestCase {
+
+    private final SqlParser parser = new SqlParser();
+
+    private Literal dateLiteral(String date) {
+        Expression exp = parser.createExpression(format(Locale.ROOT, "{d '%s'}", date));
+        assertThat(exp, instanceOf(Expression.class));
+        return (Literal) exp;
+    }
+
+    private Literal timeLiteral(String date) {
+        Expression exp = parser.createExpression(format(Locale.ROOT, "{t '%s'}", date));
+        assertThat(exp, instanceOf(Expression.class));
+        return (Literal) exp;
+    }
+
+    private Literal timestampLiteral(String date) {
+        Expression exp = parser.createExpression(format(Locale.ROOT, "{ts '%s'}", date));
+        assertThat(exp, instanceOf(Expression.class));
+        return (Literal) exp;
+    }
+
+    private Literal guidLiteral(String date) {
+        Expression exp = parser.createExpression(format(Locale.ROOT, "{guid '%s'}", date));
+        assertThat(exp, instanceOf(Expression.class));
+        return (Literal) exp;
+    }
+
+    private Limit limit(int limit) {
+        LogicalPlan plan = parser.createStatement(format(Locale.ROOT, "SELECT * FROM emp {limit %d}", limit));
+        assertThat(plan, instanceOf(With.class));
+        With with = (With) plan;
+        Limit limitPlan = (Limit) (with.child());
+        assertThat(limitPlan.limit(), instanceOf(Literal.class));
+        return limitPlan;
+    }
+
+    private LikePattern likeEscape(String like, String character) {
+        Expression exp = parser.createExpression(format(Locale.ROOT, "exp LIKE '%s' {escape '%s'}", like, character));
+        assertThat(exp, instanceOf(Like.class));
+        return ((Like) exp).right();
+    }
+
+    private Function function(String name) {
+        Expression exp = parser.createExpression(format(Locale.ROOT, "{fn %s}", name));
+        assertThat(exp, instanceOf(Function.class));
+        return (Function) exp;
+    }
+
+    public void testFunctionNoArg() {
+        Function f = function("SCORE()");
+        assertEquals("SCORE", f.functionName());
+    }
+
+    public void testFunctionOneArg() {
+        Function f = function("ABS(foo)");
+        assertEquals("ABS", f.functionName());
+        assertEquals(1, f.arguments().size());
+        Expression arg = f.arguments().get(0);
+        assertThat(arg, instanceOf(UnresolvedAttribute.class));
+        UnresolvedAttribute ua = (UnresolvedAttribute) arg;
+        assertThat(ua.name(), is("foo"));
+    }
+
+    public void testFunctionOneArgFunction() {
+        Function f = function("ABS({fn SCORE()})");
+        assertEquals("ABS", f.functionName());
+        assertEquals(1, f.arguments().size());
+        Expression arg = f.arguments().get(0);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        UnresolvedFunction uf = (UnresolvedFunction) arg;
+        assertThat(uf.name(), is("SCORE"));
+    }
+
+    public void testFunctionFloorWithExtract() {
+        Function f = function("CAST({fn FLOOR({fn EXTRACT(YEAR FROM \"foo\")})} AS int)");
+        assertEquals("CAST", f.functionName());
+        assertEquals(1, f.arguments().size());
+        Expression arg = f.arguments().get(0);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        f = (Function) arg;
+        assertEquals("FLOOR", f.functionName());
+        assertEquals(1, f.arguments().size());
+        arg = f.arguments().get(0);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        UnresolvedFunction uf = (UnresolvedFunction) arg;
+        assertThat(uf.name(), is("YEAR"));
+    }
+
+    public void testFunctionWithFunctionWithArg() {
+        Function f = function("POWER(foo, {fn POWER({fn SCORE()}, {fN SCORE()})})");
+        assertEquals("POWER", f.functionName());
+        assertEquals(2, f.arguments().size());
+        Expression arg = f.arguments().get(1);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        UnresolvedFunction uf = (UnresolvedFunction) arg;
+        assertThat(uf.name(), is("POWER"));
+        assertEquals(2, uf.arguments().size());
+
+        List<Expression> args = uf.arguments();
+        arg = args.get(0);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        uf = (UnresolvedFunction) arg;
+        assertThat(uf.name(), is("SCORE"));
+
+        arg = args.get(1);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        uf = (UnresolvedFunction) arg;
+        assertThat(uf.name(), is("SCORE"));
+    }
+
+    public void testFunctionWithFunctionWithArgAndParams() {
+        Function f = (Function) parser.createExpression("POWER(?, {fn POWER({fn ABS(?)}, {fN ABS(?)})})",
+                asList(new SqlTypedParamValue(DataType.LONG, 1),
+                       new SqlTypedParamValue(DataType.LONG, 1),
+                       new SqlTypedParamValue(DataType.LONG, 1)));
+
+        assertEquals("POWER", f.functionName());
+        assertEquals(2, f.arguments().size());
+        Expression arg = f.arguments().get(1);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        UnresolvedFunction uf = (UnresolvedFunction) arg;
+        assertThat(uf.name(), is("POWER"));
+        assertEquals(2, uf.arguments().size());
+
+        List<Expression> args = uf.arguments();
+        arg = args.get(0);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        uf = (UnresolvedFunction) arg;
+        assertThat(uf.name(), is("ABS"));
+
+        arg = args.get(1);
+        assertThat(arg, instanceOf(UnresolvedFunction.class));
+        uf = (UnresolvedFunction) arg;
+        assertThat(uf.name(), is("ABS"));
+    }
+
+    public void testDateLiteral() {
+        Literal l = dateLiteral("2012-01-01");
+        assertThat(l.dataType(), is(DataType.DATE));
+    }
+
+    public void testDateLiteralValidation() {
+        ParsingException ex = expectThrows(ParsingException.class, () -> dateLiteral("2012-13-01"));
+        assertEquals("line 1:2: Invalid date received; Cannot parse \"2012-13-01\": Value 13 for monthOfYear must be in the range [1,12]",
+                ex.getMessage());
+    }
+
+    public void testTimeLiteralUnsupported() {
+        SqlIllegalArgumentException ex = expectThrows(SqlIllegalArgumentException.class, () -> timeLiteral("10:10:10"));
+        assertThat(ex.getMessage(), is("Time (only) literals are not supported; a date component is required as well"));
+    }
+
+    public void testTimeLiteralValidation() {
+        ParsingException ex = expectThrows(ParsingException.class, () -> timeLiteral("10:10:65"));
+        assertEquals("line 1:2: Invalid time received; Cannot parse \"10:10:65\": Value 65 for secondOfMinute must be in the range [0,59]",
+                ex.getMessage());
+    }
+
+    public void testTimestampLiteral() {
+        Literal l = timestampLiteral("2012-01-01 10:01:02.3456");
+        assertThat(l.dataType(), is(DataType.DATE));
+    }
+
+    public void testTimestampLiteralValidation() {
+        ParsingException ex = expectThrows(ParsingException.class, () -> timestampLiteral("2012-01-01T10:01:02.3456"));
+        assertEquals(
+                "line 1:2: Invalid timestamp received; Invalid format: \"2012-01-01T10:01:02.3456\" is malformed at \"T10:01:02.3456\"",
+                ex.getMessage());
+    }
+
+    public void testGUID() {
+        Literal l = guidLiteral("12345678-90ab-cdef-0123-456789abcdef");
+        assertThat(l.dataType(), is(DataType.KEYWORD));
+    }
+
+    public void testGUIDValidation() {
+        ParsingException ex = expectThrows(ParsingException.class, () -> guidLiteral("12345678-90ab-cdef-0123-456789abcdeH"));
+        assertEquals(
+                "line 1:8: Invalid GUID, expected hexadecimal at offset[35], found [h]",
+                ex.getMessage());
+    }
+
+    public void testLimit() {
+        Limit limit = limit(10);
+        Literal l = (Literal) limit.limit();
+        Assert.assertThat(l.value(), is(10));
+    }
+
+    public void testLikeEscape() {
+        LikePattern pattern = likeEscape("|%tring", "|");
+        assertThat(pattern.escape(), is('|'));
+    }
+}
\ No newline at end of file

From fc1ba9512c2cfbe8552f59aa3520bd5f5c3e8913 Mon Sep 17 00:00:00 2001
From: Costin Leau <costin.leau@gmail.com>
Date: Mon, 9 Jul 2018 15:02:20 +0300
Subject: [PATCH 2/3] More tests

---
 .../xpack/sql/parser/ExpressionBuilder.java   |  4 ++--
 .../sql/parser/EscapedFunctionsTests.java     | 20 +++++++++++++++----
 2 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
index 825f4ce1f70fa..258d22259c742 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
@@ -615,7 +615,7 @@ public Literal visitGuidEscapedLiteral(GuidEscapedLiteralContext ctx) {
         for (int pos : separatorPos) {
             if (lowerCase.charAt(pos) != '-') {
                 throw new ParsingException(loc, "{}expected group separator at offset [{}], found [{}]",
-                        errorPrefix, pos, lowerCase.charAt(pos));
+                        errorPrefix, pos, string.charAt(pos));
             }
         }
 
@@ -633,7 +633,7 @@ public Literal visitGuidEscapedLiteral(GuidEscapedLiteralContext ctx) {
                 }
             }
             if (inspect && HEXA.indexOf(lowerCase.charAt(i)) < 0) {
-                throw new ParsingException(loc, "{}expected hexadecimal at offset[{}], found [{}]", errorPrefix, i, lowerCase.charAt(i));
+                throw new ParsingException(loc, "{}expected hexadecimal at offset[{}], found [{}]", errorPrefix, i, string.charAt(i));
             }
         }
 
diff --git a/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/EscapedFunctionsTests.java b/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/EscapedFunctionsTests.java
index 2b4766fc60b2a..11ad24582efb6 100644
--- a/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/EscapedFunctionsTests.java
+++ b/x-pack/plugin/sql/src/test/java/org/elasticsearch/xpack/sql/parser/EscapedFunctionsTests.java
@@ -203,15 +203,27 @@ public void testTimestampLiteralValidation() {
     public void testGUID() {
         Literal l = guidLiteral("12345678-90ab-cdef-0123-456789abcdef");
         assertThat(l.dataType(), is(DataType.KEYWORD));
+
+        l = guidLiteral("12345678-90AB-cdef-0123-456789ABCdef");
+        assertThat(l.dataType(), is(DataType.KEYWORD));
     }
 
-    public void testGUIDValidation() {
+    public void testGUIDValidationHexa() {
         ParsingException ex = expectThrows(ParsingException.class, () -> guidLiteral("12345678-90ab-cdef-0123-456789abcdeH"));
-        assertEquals(
-                "line 1:8: Invalid GUID, expected hexadecimal at offset[35], found [h]",
-                ex.getMessage());
+        assertEquals("line 1:8: Invalid GUID, expected hexadecimal at offset[35], found [H]", ex.getMessage());
     }
 
+    public void testGUIDValidationGroups() {
+        ParsingException ex = expectThrows(ParsingException.class, () -> guidLiteral("12345678A90ab-cdef-0123-456789abcdeH"));
+        assertEquals("line 1:8: Invalid GUID, expected group separator at offset [8], found [A]", ex.getMessage());
+    }
+
+    public void testGUIDValidationLength() {
+        ParsingException ex = expectThrows(ParsingException.class, () -> guidLiteral("12345678A90"));
+        assertEquals("line 1:8: Invalid GUID, too short", ex.getMessage());
+    }
+
+
     public void testLimit() {
         Limit limit = limit(10);
         Literal l = (Literal) limit.limit();

From 503bab27ededac8ad97d843d0aaa3760fbae1346 Mon Sep 17 00:00:00 2001
From: Costin Leau <costin.leau@gmail.com>
Date: Wed, 11 Jul 2018 23:36:08 +0300
Subject: [PATCH 3/3] Code style improvement

---
 .../org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
index 258d22259c742..66ec98ea53c82 100644
--- a/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
+++ b/x-pack/plugin/sql/src/main/java/org/elasticsearch/xpack/sql/parser/ExpressionBuilder.java
@@ -236,7 +236,7 @@ public LikePattern visitPattern(PatternContext ctx) {
 
         char escape = 0;
         PatternEscapeContext escapeCtx = ctx.patternEscape();
-        String escapeString = string(escapeCtx != null ? escapeCtx.escape : null);
+        String escapeString = escapeCtx == null ? null : string(escapeCtx.escape);
 
         if (Strings.hasText(escapeString)) {
             // shouldn't happen but adding validation in case the string parsing gets wonky