liquibase#3035 add Double data type class to avoid incorrect double(0…

…) database data type result

liquibase-snowflake/src/main/java/liquibase/datatype/core/DoubleDataTypeSnowflake.java

@@ -0,0 +1,36 @@
+package liquibase.datatype.core;
+
+import liquibase.database.Database;
+import liquibase.database.core.SnowflakeDatabase;
+import liquibase.datatype.DataTypeInfo;
+import liquibase.datatype.DatabaseDataType;
+import liquibase.datatype.LiquibaseDataType;
+
+@DataTypeInfo(
+    name = "double",
+    aliases = {"java.sql.Types.DOUBLE", "java.lang.Double"},
+    minParameters = 0,
+    maxParameters = 2,
+    priority = LiquibaseDataType.PRIORITY_DATABASE
+)
+public class DoubleDataTypeSnowflake extends DoubleType {
+
+    public DoubleDataTypeSnowflake() {
+
+    }
+
+    public int getPriority() {
+        return LiquibaseDataType.PRIORITY_DATABASE;
+    }
+
+    @Override
+    public boolean supports(Database database) {
+        return database instanceof SnowflakeDatabase;
+    }
+
+    @Override
+    public DatabaseDataType toDatabaseDataType(Database database) {
+        // Double is an alias for the FLOAT data type in Snowflake.
+        return new DatabaseDataType("FLOAT");
+    }
+}

liquibase-snowflake/src/main/resources/META-INF/services/liquibase.datatype.LiquibaseDataType

@@ -1,2 +1,3 @@
 liquibase.datatype.core.TextDataTypeSnowflake
-liquibase.datatype.core.TimestampNTZTypeSnowflake
+liquibase.datatype.core.TimestampNTZTypeSnowflake
+liquibase.datatype.core.DoubleDataTypeSnowflake