diff --git a/go-tipb/expression.pb.go b/go-tipb/expression.pb.go
index 3c79e5ae..4ab0a256 100644
--- a/go-tipb/expression.pb.go
+++ b/go-tipb/expression.pb.go
@@ -770,14 +770,14 @@ const (
 	ScalarFuncSig_SubDateDecimalInt              ScalarFuncSig = 6141
 	ScalarFuncSig_SubDateDecimalReal             ScalarFuncSig = 6142
 	ScalarFuncSig_SubDateDecimalDecimal          ScalarFuncSig = 6143
-	ScalarFuncSig_AddDateDurationStringDateTime  ScalarFuncSig = 6144
-	ScalarFuncSig_AddDateDurationIntDateTime     ScalarFuncSig = 6145
-	ScalarFuncSig_AddDateDurationRealDateTime    ScalarFuncSig = 6146
-	ScalarFuncSig_AddDateDurationDecimalDateTime ScalarFuncSig = 6147
-	ScalarFuncSig_SubDateDurationStringDateTime  ScalarFuncSig = 6148
-	ScalarFuncSig_SubDateDurationIntDateTime     ScalarFuncSig = 6149
-	ScalarFuncSig_SubDateDurationRealDateTime    ScalarFuncSig = 6150
-	ScalarFuncSig_SubDateDurationDecimalDateTime ScalarFuncSig = 6151
+	ScalarFuncSig_AddDateDurationStringDatetime  ScalarFuncSig = 6144
+	ScalarFuncSig_AddDateDurationIntDatetime     ScalarFuncSig = 6145
+	ScalarFuncSig_AddDateDurationRealDatetime    ScalarFuncSig = 6146
+	ScalarFuncSig_AddDateDurationDecimalDatetime ScalarFuncSig = 6147
+	ScalarFuncSig_SubDateDurationStringDatetime  ScalarFuncSig = 6148
+	ScalarFuncSig_SubDateDurationIntDatetime     ScalarFuncSig = 6149
+	ScalarFuncSig_SubDateDurationRealDatetime    ScalarFuncSig = 6150
+	ScalarFuncSig_SubDateDurationDecimalDatetime ScalarFuncSig = 6151
 	// String functions
 	ScalarFuncSig_BitLength               ScalarFuncSig = 7001
 	ScalarFuncSig_Bin                     ScalarFuncSig = 7002
@@ -1405,14 +1405,14 @@ var ScalarFuncSig_name = map[int32]string{
 	6141: "SubDateDecimalInt",
 	6142: "SubDateDecimalReal",
 	6143: "SubDateDecimalDecimal",
-	6144: "AddDateDurationStringDateTime",
-	6145: "AddDateDurationIntDateTime",
-	6146: "AddDateDurationRealDateTime",
-	6147: "AddDateDurationDecimalDateTime",
-	6148: "SubDateDurationStringDateTime",
-	6149: "SubDateDurationIntDateTime",
-	6150: "SubDateDurationRealDateTime",
-	6151: "SubDateDurationDecimalDateTime",
+	6144: "AddDateDurationStringDatetime",
+	6145: "AddDateDurationIntDatetime",
+	6146: "AddDateDurationRealDatetime",
+	6147: "AddDateDurationDecimalDatetime",
+	6148: "SubDateDurationStringDatetime",
+	6149: "SubDateDurationIntDatetime",
+	6150: "SubDateDurationRealDatetime",
+	6151: "SubDateDurationDecimalDatetime",
 	7001: "BitLength",
 	7002: "Bin",
 	7003: "ASCII",
@@ -2038,14 +2038,14 @@ var ScalarFuncSig_value = map[string]int32{
 	"SubDateDecimalInt":                6141,
 	"SubDateDecimalReal":               6142,
 	"SubDateDecimalDecimal":            6143,
-	"AddDateDurationStringDateTime":    6144,
-	"AddDateDurationIntDateTime":       6145,
-	"AddDateDurationRealDateTime":      6146,
-	"AddDateDurationDecimalDateTime":   6147,
-	"SubDateDurationStringDateTime":    6148,
-	"SubDateDurationIntDateTime":       6149,
-	"SubDateDurationRealDateTime":      6150,
-	"SubDateDurationDecimalDateTime":   6151,
+	"AddDateDurationStringDatetime":    6144,
+	"AddDateDurationIntDatetime":       6145,
+	"AddDateDurationRealDatetime":      6146,
+	"AddDateDurationDecimalDatetime":   6147,
+	"SubDateDurationStringDatetime":    6148,
+	"SubDateDurationIntDatetime":       6149,
+	"SubDateDurationRealDatetime":      6150,
+	"SubDateDurationDecimalDatetime":   6151,
 	"BitLength":                        7001,
 	"Bin":                              7002,
 	"ASCII":                            7003,
@@ -3575,7 +3575,7 @@ var (
 func init() { proto.RegisterFile("expression.proto", fileDescriptorExpression) }
 
 var fileDescriptorExpression = []byte{
-	// 5839 bytes of a gzipped FileDescriptorProto
+	// 5838 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x74, 0x7b, 0x67, 0x78, 0x1b, 0xc7,
 	0xb9, 0xae, 0xa1, 0x62, 0x49, 0xab, 0x36, 0x5e, 0x4b, 0x26, 0xac, 0x38, 0x22, 0x69, 0xe6, 0x5e,
 	0x32, 0xce, 0xbd, 0x84, 0x4c, 0x3b, 0x60, 0x7e, 0x9c, 0x06, 0xb1, 0x19, 0x39, 0x24, 0x45, 0x11,
@@ -3894,51 +3894,51 @@ var fileDescriptorExpression = []byte{
 	0x32, 0x8c, 0xf4, 0xe1, 0xe3, 0x68, 0xcd, 0xea, 0x3e, 0x7c, 0x82, 0x3e, 0x44, 0x40, 0xb8, 0xff,
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+	0x77, 0xa5, 0x68, 0xef, 0xec, 0x3e, 0x84, 0x5b, 0x2b, 0x1b, 0xfe, 0x71, 0x09, 0xff, 0x06, 0xe1,
+	0x57, 0xaa, 0x65, 0x2e, 0x38, 0xee, 0x12, 0xf6, 0xb1, 0x97, 0x63, 0x6d, 0x70, 0xca, 0x68, 0x26,
+	0x48, 0x61, 0xc4, 0x09, 0x84, 0xeb, 0x94, 0x0f, 0x05, 0x32, 0x2f, 0x82, 0x74, 0x01, 0x99, 0x4f,
+	0x26, 0xbd, 0xbc, 0x58, 0xab, 0xa2, 0xb9, 0x60, 0xfd, 0xd7, 0x77, 0xef, 0x5d, 0x9b, 0x78, 0x68,
+	0xef, 0xda, 0xc4, 0x0b, 0x7b, 0xd7, 0x26, 0xb6, 0xbc, 0xb4, 0x76, 0x1f, 0x6b, 0x75, 0xc1, 0xaf,
+	0x74, 0x56, 0x5d, 0xaf, 0x54, 0x70, 0xaa, 0x9d, 0xc2, 0x2d, 0x4e, 0xe0, 0xdf, 0x93, 0x46, 0x12,
+	0xff, 0x1b, 0x00, 0x00, 0xff, 0xff, 0x89, 0x80, 0x6a, 0xe9, 0xcc, 0x37, 0x00, 0x00,
 }
diff --git a/proto/expression.proto b/proto/expression.proto
index 027c5dfa..8779b72b 100644
--- a/proto/expression.proto
+++ b/proto/expression.proto
@@ -679,14 +679,14 @@ enum ScalarFuncSig {
 	SubDateDecimalInt = 6141;
 	SubDateDecimalReal = 6142;
 	SubDateDecimalDecimal = 6143;
-	AddDateDurationStringDateTime = 6144;
-	AddDateDurationIntDateTime = 6145;
-	AddDateDurationRealDateTime = 6146;
-	AddDateDurationDecimalDateTime = 6147;
-	SubDateDurationStringDateTime = 6148;
-	SubDateDurationIntDateTime = 6149;
-	SubDateDurationRealDateTime = 6150;
-	SubDateDurationDecimalDateTime = 6151;
+	AddDateDurationStringDatetime = 6144;
+	AddDateDurationIntDatetime = 6145;
+	AddDateDurationRealDatetime = 6146;
+	AddDateDurationDecimalDatetime = 6147;
+	SubDateDurationStringDatetime = 6148;
+	SubDateDurationIntDatetime = 6149;
+	SubDateDurationRealDatetime = 6150;
+	SubDateDurationDecimalDatetime = 6151;
 
 	/* String functions */
 	BitLength = 7001;