Dealing with side case in relation to text type.

pkg/sql/plan/base_binder.go

@@ -963,7 +963,7 @@ func bindFuncExprImplByPlanExpr(name string, args []*Expr) (*plan.Expr, error) {
 	// rewrite some cast rule:  expr:  int32Col > 10,
 	// old rule: cast(int32Col as int64) >10 ,   new rule: int32Col > (cast 10 as int32)
 	switch name {
-	case "=", "<", "<=", ">", ">=", "<>":
+	case "=", "<", "<=", ">", ">=", "<>", "like":
 		// if constant's type higher than column's type
 		// and constant's value in range of column's type, then no cast was needed
 		switch leftExpr := args[0].Expr.(type) {

pkg/sql/plan/function/operator/compare.go

@@ -198,7 +198,7 @@ func CompareString(vs []*vector.Vector, fn compStringFn, proc *process.Process)
 		length := vector.Length(v2)
 		vec := allocateBoolVector(length, proc)
 		veccol := vec.Col.([]bool)
-		if v2.Typ.Width <= types.VarlenaInlineSize {
+		if v2.GetArea() == nil {
 			for i := range veccol {
 				veccol[i] = fn(col1[0], (&col2[i]).ByteSlice(), v1.Typ.Width, v2.Typ.Width)
 			}
@@ -217,7 +217,7 @@ func CompareString(vs []*vector.Vector, fn compStringFn, proc *process.Process)
 		length := vector.Length(v1)
 		vec := allocateBoolVector(length, proc)
 		veccol := vec.Col.([]bool)
-		if v1.Typ.Width <= types.VarlenaInlineSize {
+		if v1.GetArea() == nil {
 			for i := range veccol {
 				veccol[i] = fn((&col1[i]).ByteSlice(), col2[0], v1.Typ.Width, v2.Typ.Width)
 			}
@@ -236,15 +236,15 @@ func CompareString(vs []*vector.Vector, fn compStringFn, proc *process.Process)
 	length := vector.Length(v1)
 	vec := allocateBoolVector(length, proc)
 	veccol := vec.Col.([]bool)
-	if v1.Typ.Width <= types.VarlenaInlineSize && v2.Typ.Width <= types.VarlenaInlineSize {
+	if v1.GetArea() == nil && v2.GetArea() == nil {
 		for i := range veccol {
 			veccol[i] = fn((&col1[i]).ByteSlice(), (&col2[i]).ByteSlice(), v1.Typ.Width, v2.Typ.Width)
 		}
-	} else if v1.Typ.Width <= types.VarlenaInlineSize {
+	} else if v1.GetArea() == nil {
 		for i := range veccol {
 			veccol[i] = fn((&col1[i]).ByteSlice(), (&col2[i]).GetByteSlice(area2), v1.Typ.Width, v2.Typ.Width)
 		}
-	} else if v2.Typ.Width <= types.VarlenaInlineSize {
+	} else if v2.GetArea() == nil {
 		for i := range veccol {
 			veccol[i] = fn((&col1[i]).GetByteSlice(area1), (&col2[i]).ByteSlice(), v1.Typ.Width, v2.Typ.Width)
 		}

pkg/sql/plan/function/operators.go

@@ -1869,8 +1869,8 @@ var operators = map[int]Functions{
 			{
 				Index: 2,
 				Args: []types.T{
-					types.T_char,
-					types.T_char,
+					types.T_text,
+					types.T_text,
 				},
 				ReturnTyp: types.T_bool,
 				Fn:        operator.Like,

pkg/sql/plan/utils.go

@@ -15,9 +15,10 @@
 package plan
 
 import (
-	"github.com/matrixorigin/matrixone/pkg/vm/process"
 	"math"
 
+	"github.com/matrixorigin/matrixone/pkg/vm/process"
+
 	"github.com/matrixorigin/matrixone/pkg/common/moerr"
 	"github.com/matrixorigin/matrixone/pkg/container/batch"
 	"github.com/matrixorigin/matrixone/pkg/container/nulls"
@@ -1109,12 +1110,14 @@ func checkNoNeedCast(constT, columnT types.Type, constExpr *plan.Expr_C) bool {
 	switch constT.Oid {
 	case types.T_char, types.T_varchar, types.T_text:
 		switch columnT.Oid {
-		case types.T_char, types.T_varchar, types.T_text:
+		case types.T_char, types.T_varchar:
 			if constT.Width <= columnT.Width {
 				return true
 			} else {
 				return false
 			}
+		case types.T_text:
+			return true
 		default:
 			return false
 		}

test/distributed/cases/operator/like_operator.result

@@ -392,3 +392,9 @@ insert into t1 values(121, 121, 121, 121);
 select * from t1 where (a like '%2%' and b like '%2%' and c like '%2%' and d like '%2%');
 a    b    c    d
 121    121    121    121
+drop table t1;
+
+create table t1(a text);
+insert into t1 values(rpad('1',50000,'1') + rpad('1',50000,'1'));
+select * from t1 where a like ".";
+a

test/distributed/cases/operator/like_operator.sql

@@ -209,3 +209,8 @@ drop table t1;
 create table t1(a tinyint unsigned, b smallint unsigned, c int unsigned, d bigint unsigned);
 insert into t1 values(121, 121, 121, 121);
 select * from t1 where (a like '%2%' and b like '%2%' and c like '%2%' and d like '%2%');
+
+drop table t1;
+create table t1(a text);
+insert into t1 values(rpad('1',50000,'1') + rpad('1',50000,'1'));
+select * from t1 where a like ".";