fix: unify varchar format_type display with PostgreSQL (#12648)

e2e_test/batch/basic/array.slt.part

@@ -134,8 +134,8 @@ double precision[]
 query T
 select pg_typeof(arr::varchar[]) from (values ('{1, 2, 3}'), ('{4, 5, 6}')) as t(arr);
 ----
-varchar[]
-varchar[]
+character varying[]
+character varying[]
 
 # Test explicit cast to nested integer array
 query T

e2e_test/batch/basic/func.slt.part

@@ -261,7 +261,7 @@ unknown
 query T
 select pg_typeof('123'::varchar);
 ----
-varchar
+character varying
 
 query T
 select pg_typeof('123'::int);
@@ -276,7 +276,7 @@ unknown
 query T
 select pg_typeof(null::varchar);
 ----
-varchar
+character varying
 
 query T
 select pg_typeof(null::bool);
@@ -649,4 +649,4 @@ select regexp_count('foobar', 'b..', 1, 'g');
 query T
 select regexp_count('💩💩💩💩💩foo🤔️bar亲爱的😭baz这不是爱情❤️‍🔥', '亲爱的😭', 1, 'i');
 ----
-1
+1

e2e_test/batch/functions/format_type.slt.part

@@ -17,3 +17,8 @@ query T
 SELECT format_type(NULL, 0);
 ----
 NULL
+
+query T
+SELECT format_type(1043, '-1');
+----
+character varying

e2e_test/udf/udf.slt

@@ -71,20 +71,20 @@ as return_all_arrays using link 'http://localhost:8815';
 query TTTTT rowsort
 show functions
 ----
-array_access varchar[], integer varchar (empty) http://localhost:8815
-extract_tcp_info bytea struct<src_ip varchar,dst_ip varchar,src_port smallint,dst_port smallint> (empty) http://localhost:8815
+array_access character varying[], integer character varying (empty) http://localhost:8815
+extract_tcp_info bytea struct<src_ip character varying,dst_ip character varying,src_port smallint,dst_port smallint> (empty) http://localhost:8815
 gcd integer, integer integer (empty) http://localhost:8815
 gcd integer, integer, integer integer (empty) http://localhost:8815
-hex_to_dec varchar numeric (empty) http://localhost:8815
+hex_to_dec character varying numeric (empty) http://localhost:8815
 int_42 (empty) integer (empty) http://localhost:8815
 jsonb_access jsonb, integer jsonb (empty) http://localhost:8815
 jsonb_array_identity jsonb[] jsonb[] (empty) http://localhost:8815
 jsonb_array_struct_identity struct<v jsonb[],len integer> struct<v jsonb[],len integer> (empty) http://localhost:8815
 jsonb_concat jsonb[] jsonb (empty) http://localhost:8815
-return_all boolean, smallint, integer, bigint, real, double precision, numeric, date, time without time zone, timestamp without time zone, interval, varchar, bytea, jsonb struct<bool boolean,i16 smallint,i32 integer,i64 bigint,f32 real,f64 double precision,decimal numeric,date date,time time without time zone,timestamp timestamp without time zone,interval interval,varchar varchar,bytea bytea,jsonb jsonb> (empty) http://localhost:8815
-return_all_arrays boolean[], smallint[], integer[], bigint[], real[], double precision[], numeric[], date[], time without time zone[], timestamp without time zone[], interval[], varchar[], bytea[], jsonb[] struct<bool boolean[],i16 smallint[],i32 integer[],i64 bigint[],f32 real[],f64 double precision[],decimal numeric[],date date[],time time without time zone[],timestamp timestamp without time zone[],interval interval[],varchar varchar[],bytea bytea[],jsonb jsonb[]> (empty) http://localhost:8815
+return_all boolean, smallint, integer, bigint, real, double precision, numeric, date, time without time zone, timestamp without time zone, interval, character varying, bytea, jsonb struct<bool boolean,i16 smallint,i32 integer,i64 bigint,f32 real,f64 double precision,decimal numeric,date date,time time without time zone,timestamp timestamp without time zone,interval interval,varchar character varying,bytea bytea,jsonb jsonb> (empty) http://localhost:8815
+return_all_arrays boolean[], smallint[], integer[], bigint[], real[], double precision[], numeric[], date[], time without time zone[], timestamp without time zone[], interval[], character varying[], bytea[], jsonb[] struct<bool boolean[],i16 smallint[],i32 integer[],i64 bigint[],f32 real[],f64 double precision[],decimal numeric[],date date[],time time without time zone[],timestamp timestamp without time zone[],interval interval[],varchar character varying[],bytea bytea[],jsonb jsonb[]> (empty) http://localhost:8815
 series integer integer (empty) http://localhost:8815
-split varchar struct<word varchar,length integer> (empty) http://localhost:8815
+split character varying struct<word character varying,length integer> (empty) http://localhost:8815
 
 query I
 select int_42();

src/common/src/types/mod.rs

@@ -122,8 +122,8 @@ pub enum DataType {
     #[display("date")]
     #[from_str(regex = "(?i)^date$")]
     Date,
-    #[display("varchar")]
-    #[from_str(regex = "(?i)^varchar$")]
+    #[display("character varying")]
+    #[from_str(regex = "(?i)^character varying$|^varchar$")]
     Varchar,
     #[display("time without time zone")]
     #[from_str(regex = "(?i)^time$|^time without time zone$")]
@@ -1196,7 +1196,10 @@ mod tests {
             vec![DataType::Int32, DataType::Varchar],
             vec!["i".to_string(), "j".to_string()],
         );
-        assert_eq!(format!("{}", d), "struct<i integer,j varchar>".to_string());
+        assert_eq!(
+            format!("{}", d),
+            "struct<i integer,j character varying>".to_string()
+        );
     }
 
     #[test]

src/frontend/planner_test/tests/testdata/output/array.yaml

@@ -128,7 +128,7 @@
     Bind error: failed to bind expression: array_cat('{1}', 2)
 
     Caused by:
-      Bind error: Cannot concatenate varchar and integer
+      Bind error: Cannot concatenate character varying and integer
 - sql: |
     select array_append(array[66], 123);
   logical_plan: |-
@@ -190,7 +190,7 @@
   sql: |
     create table t (v1 varchar[]);
     insert into t values ('{c,' || 'd}');
-  binder_error: 'Bind error: cannot cast type "varchar" to "varchar[]" in Assign context'
+  binder_error: 'Bind error: cannot cast type "character varying" to "character varying[]" in Assign context'
 - name: string to varchar[] in explicit context
   sql: |
     select ('{c,' || 'd}')::varchar[];

src/frontend/planner_test/tests/testdata/output/concat_op_dispatch.yaml

@@ -30,7 +30,7 @@
     Bind error: failed to bind expression: ARRAY[1] || s
 
     Caused by:
-      Bind error: Cannot append varchar to integer[]
+      Bind error: Cannot append character varying to integer[]
 - name: jsonb || jsonb -> jsonb
   sql: |
     select '1'::jsonb || '2'::jsonb;

src/frontend/planner_test/tests/testdata/output/expr.yaml

@@ -306,7 +306,7 @@
     Bind error: failed to bind expression: concat_ws(v1, 1.2)
 
     Caused by:
-      Bind error: cannot cast type "integer" to "varchar" in Implicit context
+      Bind error: cannot cast type "integer" to "character varying" in Implicit context
 - sql: |
     create table t (v1 int);
     select concat_ws() from t;

src/frontend/planner_test/tests/testdata/output/struct_query.yaml

@@ -300,7 +300,7 @@
     Bind error: failed to bind expression: avg(country)
 
     Caused by:
-      Invalid input syntax: Invalid aggregation: avg(struct<address varchar,zipcode varchar>)
+      Invalid input syntax: Invalid aggregation: avg(struct<address character varying,zipcode character varying>)
   create_source:
     format: plain
     encode: protobuf
@@ -346,7 +346,7 @@
 - sql: |
     create materialized view t as select * from s;
     select (country).address.* from t;
-  binder_error: 'Bind error: type "varchar" is not composite'
+  binder_error: 'Bind error: type "character varying" is not composite'
   create_source:
     format: plain
     encode: protobuf

src/frontend/src/handler/show.rs

@@ -575,12 +575,12 @@ mod tests {
 
         let expected_columns: HashMap<String, String> = maplit::hashmap! {
             "id".into() => "integer".into(),
-            "country.zipcode".into() => "varchar".into(),
+            "country.zipcode".into() => "character varying".into(),
             "zipcode".into() => "bigint".into(),
-            "country.city.address".into() => "varchar".into(),
-            "country.address".into() => "varchar".into(),
+            "country.city.address".into() => "character varying".into(),
+            "country.address".into() => "character varying".into(),
             "country.city".into() => "test.City".into(),
-            "country.city.zipcode".into() => "varchar".into(),
+            "country.city.zipcode".into() => "character varying".into(),
             "rate".into() => "real".into(),
             "country".into() => "test.Country".into(),
         };