diff --git a/test/common/response_check.go b/test/common/response_check.go
index 1a5840dc..2d0b8531 100644
--- a/test/common/response_check.go
+++ b/test/common/response_check.go
@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	"log"
+	"reflect"
 	"strings"
 	"testing"
 
@@ -155,9 +156,15 @@ func EqualColumn(t *testing.T, columnA entity.Column, columnB entity.Column) {
 	case entity.FieldTypeVarChar:
 		require.ElementsMatch(t, columnA.(*entity.ColumnVarChar).Data(), columnB.(*entity.ColumnVarChar).Data())
 	case entity.FieldTypeJSON:
-		log.Printf("columnA: %s", columnA.(*entity.ColumnJSONBytes).Data())
-		log.Printf("columnB: %s", columnB.(*entity.ColumnJSONBytes).Data())
-		require.ElementsMatch(t, columnA.(*entity.ColumnJSONBytes).Data(), columnB.(*entity.ColumnJSONBytes).Data())
+		log.Printf("columnA: %s", columnA.FieldData())
+		log.Printf("columnB: %s", columnB.FieldData())
+		require.Equal(t, reflect.TypeOf(columnA), reflect.TypeOf(columnB))
+		switch columnA.(type) {
+		case *entity.ColumnDynamic:
+			require.ElementsMatch(t, columnA.(*entity.ColumnDynamic).Data(), columnB.(*entity.ColumnDynamic).Data())
+		case *entity.ColumnJSONBytes:
+			require.ElementsMatch(t, columnA.(*entity.ColumnJSONBytes).Data(), columnB.(*entity.ColumnJSONBytes).Data())
+		}
 	case entity.FieldTypeFloatVector:
 		require.ElementsMatch(t, columnA.(*entity.ColumnFloatVector).Data(), columnB.(*entity.ColumnFloatVector).Data())
 	case entity.FieldTypeBinaryVector:
diff --git a/test/testcases/query_test.go b/test/testcases/query_test.go
index 2833fad5..6e089ee3 100644
--- a/test/testcases/query_test.go
+++ b/test/testcases/query_test.go
@@ -984,12 +984,16 @@ func TestQueryJsonDynamicExpr(t *testing.T) {
 	// verify output fields and count, dynamicNumber value
 	common.CheckOutputFields(t, queryRes, []string{common.DefaultIntFieldName, common.DefaultJSONFieldName, common.DefaultDynamicNumberField})
 	require.Equal(t, 10, queryRes.GetColumn(common.DefaultJSONFieldName).Len())
+
+	// verify only output dynamic part key: common.DefaultDynamicNumberField
 	dynamicNumColumn := queryRes.GetColumn(common.DefaultDynamicNumberField)
-	var numberData []int64
-	for i := 0; i < dynamicNumColumn.Len(); i++ {
-		line, _ := dynamicNumColumn.GetAsInt64(i)
-		numberData = append(numberData, line)
+	numberValues := make([]int32, 0, 10)
+	for i := 0; i < 10; i++ {
+		numberValues = append(numberValues, int32(i))
 	}
+	_expColumn := common.MergeColumnsToDynamic(10, common.GenDynamicFieldData(0, 10)[:1], common.DefaultDynamicFieldName)
+	expColumn := entity.NewColumnDynamic(_expColumn, common.DefaultDynamicNumberField)
+	common.EqualColumn(t, dynamicNumColumn, expColumn)
 }
 
 // test query and output both json and dynamic field