bindinfo: fix the bind fields with quotes or slashes (#11671)

bindinfo/bind_test.go

@@ -135,6 +135,11 @@ func (s *testSuite) TestBindParse(c *C) {
 	c.Check(bindData.Collation, Equals, "utf8mb4_bin")
 	c.Check(bindData.CreateTime, NotNil)
 	c.Check(bindData.UpdateTime, NotNil)
+
+	// Test fields with quotes or slashes.
+	sql = `CREATE GLOBAL BINDING FOR  select * from t where a BETWEEN "a" and "b" USING select * from t use index(idx) where a BETWEEN "a\nb\rc\td\0e" and "x"`
+	tk.MustExec(sql)
+	tk.MustExec(`DROP global binding for select * from t use index(idx) where a BETWEEN "a\nb\rc\td\0e" and "x"`)
 }
 
 func (s *testSuite) TestGlobalBinding(c *C) {

bindinfo/handle.go

@@ -14,7 +14,6 @@
 package bindinfo
 
 import (
-	"bytes"
 	"context"
 	"fmt"
 	"go.uber.org/zap"
@@ -188,7 +187,6 @@ func (h *BindHandle) AddBindRecord(record *BindRecord) (err error) {
 	}
 	record.UpdateTime = record.CreateTime
 	record.Status = Using
-	record.BindSQL = h.getEscapeCharacter(record.BindSQL)
 
 	// insert the BindRecord to the storage.
 	_, err = exec.Execute(context.TODO(), h.insertBindInfoSQL(record))
@@ -446,14 +444,3 @@ func (h *BindHandle) logicalDeleteBindInfoSQL(normdOrigSQL, db string, updateTs
 		normdOrigSQL,
 		db)
 }
-
-func (h *BindHandle) getEscapeCharacter(str string) string {
-	var buffer bytes.Buffer
-	for _, v := range str {
-		if v == '\'' || v == '"' || v == '\\' {
-			buffer.WriteString("\\")
-		}
-		buffer.WriteString(string(v))
-	}
-	return buffer.String()
-}