diff --git a/expression/builtin_time.go b/expression/builtin_time.go
index b877fb6cd5d23..3b6cdc88c3238 100644
--- a/expression/builtin_time.go
+++ b/expression/builtin_time.go
@@ -2801,7 +2801,7 @@ type baseDateArithmetical struct {
 	intervalRegexp *regexp.Regexp
 }
 
-func newDateArighmeticalUtil() baseDateArithmetical {
+func newDateArithmeticalUtil() baseDateArithmetical {
 	return baseDateArithmetical{
 		intervalRegexp: regexp.MustCompile(`-?[\d]+`),
 	}
@@ -3391,97 +3391,97 @@ func (c *addDateFunctionClass) getFunction(ctx sessionctx.Context, args []Expres
 	case dateEvalTp == types.ETString && intervalEvalTp == types.ETString:
 		sig = &builtinAddDateStringStringSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateStringString)
 	case dateEvalTp == types.ETString && intervalEvalTp == types.ETInt:
 		sig = &builtinAddDateStringIntSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateStringInt)
 	case dateEvalTp == types.ETString && intervalEvalTp == types.ETReal:
 		sig = &builtinAddDateStringRealSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateStringReal)
 	case dateEvalTp == types.ETString && intervalEvalTp == types.ETDecimal:
 		sig = &builtinAddDateStringDecimalSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateStringDecimal)
 	case dateEvalTp == types.ETInt && intervalEvalTp == types.ETString:
 		sig = &builtinAddDateIntStringSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateIntString)
 	case dateEvalTp == types.ETInt && intervalEvalTp == types.ETInt:
 		sig = &builtinAddDateIntIntSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateIntInt)
 	case dateEvalTp == types.ETInt && intervalEvalTp == types.ETReal:
 		sig = &builtinAddDateIntRealSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateIntReal)
 	case dateEvalTp == types.ETInt && intervalEvalTp == types.ETDecimal:
 		sig = &builtinAddDateIntDecimalSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateIntDecimal)
 	case dateEvalTp == types.ETDatetime && intervalEvalTp == types.ETString:
 		sig = &builtinAddDateDatetimeStringSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateDatetimeString)
 	case dateEvalTp == types.ETDatetime && intervalEvalTp == types.ETInt:
 		sig = &builtinAddDateDatetimeIntSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateDatetimeInt)
 	case dateEvalTp == types.ETDatetime && intervalEvalTp == types.ETReal:
 		sig = &builtinAddDateDatetimeRealSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateDatetimeReal)
 	case dateEvalTp == types.ETDatetime && intervalEvalTp == types.ETDecimal:
 		sig = &builtinAddDateDatetimeDecimalSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateDatetimeDecimal)
 	case dateEvalTp == types.ETDuration && intervalEvalTp == types.ETString:
 		sig = &builtinAddDateDurationStringSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateDurationString)
 	case dateEvalTp == types.ETDuration && intervalEvalTp == types.ETInt:
 		sig = &builtinAddDateDurationIntSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateDurationInt)
 	case dateEvalTp == types.ETDuration && intervalEvalTp == types.ETReal:
 		sig = &builtinAddDateDurationRealSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateDurationReal)
 	case dateEvalTp == types.ETDuration && intervalEvalTp == types.ETDecimal:
 		sig = &builtinAddDateDurationDecimalSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_AddDateDurationDecimal)
 	}
@@ -4075,97 +4075,97 @@ func (c *subDateFunctionClass) getFunction(ctx sessionctx.Context, args []Expres
 	case dateEvalTp == types.ETString && intervalEvalTp == types.ETString:
 		sig = &builtinSubDateStringStringSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateStringString)
 	case dateEvalTp == types.ETString && intervalEvalTp == types.ETInt:
 		sig = &builtinSubDateStringIntSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateStringInt)
 	case dateEvalTp == types.ETString && intervalEvalTp == types.ETReal:
 		sig = &builtinSubDateStringRealSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateStringReal)
 	case dateEvalTp == types.ETString && intervalEvalTp == types.ETDecimal:
 		sig = &builtinSubDateStringDecimalSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateStringDecimal)
 	case dateEvalTp == types.ETInt && intervalEvalTp == types.ETString:
 		sig = &builtinSubDateIntStringSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateIntString)
 	case dateEvalTp == types.ETInt && intervalEvalTp == types.ETInt:
 		sig = &builtinSubDateIntIntSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateIntInt)
 	case dateEvalTp == types.ETInt && intervalEvalTp == types.ETReal:
 		sig = &builtinSubDateIntRealSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateIntReal)
 	case dateEvalTp == types.ETInt && intervalEvalTp == types.ETDecimal:
 		sig = &builtinSubDateIntDecimalSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateIntDecimal)
 	case dateEvalTp == types.ETDatetime && intervalEvalTp == types.ETString:
 		sig = &builtinSubDateDatetimeStringSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateDatetimeString)
 	case dateEvalTp == types.ETDatetime && intervalEvalTp == types.ETInt:
 		sig = &builtinSubDateDatetimeIntSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateDatetimeInt)
 	case dateEvalTp == types.ETDatetime && intervalEvalTp == types.ETReal:
 		sig = &builtinSubDateDatetimeRealSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateDatetimeReal)
 	case dateEvalTp == types.ETDatetime && intervalEvalTp == types.ETDecimal:
 		sig = &builtinSubDateDatetimeDecimalSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateDatetimeDecimal)
 	case dateEvalTp == types.ETDuration && intervalEvalTp == types.ETString:
 		sig = &builtinSubDateDurationStringSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateDurationString)
 	case dateEvalTp == types.ETDuration && intervalEvalTp == types.ETInt:
 		sig = &builtinSubDateDurationIntSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateDurationInt)
 	case dateEvalTp == types.ETDuration && intervalEvalTp == types.ETReal:
 		sig = &builtinSubDateDurationRealSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateDurationReal)
 	case dateEvalTp == types.ETDuration && intervalEvalTp == types.ETDecimal:
 		sig = &builtinSubDateDurationDecimalSig{
 			baseBuiltinFunc:      bf,
-			baseDateArithmetical: newDateArighmeticalUtil(),
+			baseDateArithmetical: newDateArithmeticalUtil(),
 		}
 		sig.setPbCode(tipb.ScalarFuncSig_SubDateDurationDecimal)
 	}
diff --git a/expression/builtin_time_test.go b/expression/builtin_time_test.go
index 28c9292ff1b20..a2a0b3752b674 100644
--- a/expression/builtin_time_test.go
+++ b/expression/builtin_time_test.go
@@ -932,7 +932,7 @@ func (s *testEvaluatorSuite) TestAddTimeSig(c *C) {
 	}
 
 	// This is a test for issue 7334
-	du := newDateArighmeticalUtil()
+	du := newDateArithmeticalUtil()
 	resetStmtContext(s.ctx)
 	now, _, err := evalNowWithFsp(s.ctx, 0)
 	c.Assert(err, IsNil)