diff --git a/sysmodule/DBModule.go b/sysmodule/DBModule.go
index 28aac2e..84c0f87 100644
--- a/sysmodule/DBModule.go
+++ b/sysmodule/DBModule.go
@@ -503,13 +503,13 @@ func (slf *DataSetList) UnMarshal(args ...interface{}) error {
 		}
 
 		if v.Elem().Kind() == reflect.Struct {
-			err := slf.RowData2interface(0, slf.dataSetList[slf.currentDataSetIdx].RowInfo, v)
+			err := slf.rowData2interface(0, slf.dataSetList[slf.currentDataSetIdx].RowInfo, v)
 			if err != nil {
 				return err
 			}
 		}
 		if v.Elem().Kind() == reflect.Slice {
-			err := slf.Slice2interface(out)
+			err := slf.slice2interface(out)
 			if err != nil {
 				return err
 			}
@@ -521,7 +521,7 @@ func (slf *DataSetList) UnMarshal(args ...interface{}) error {
 	return nil
 }
 
-func (slf *DataSetList) Slice2interface(in interface{}) error {
+func (slf *DataSetList) slice2interface(in interface{}) error {
 	length := slf.dataSetList[slf.currentDataSetIdx].rowNum
 	if length == 0 {
 		return nil
@@ -542,7 +542,7 @@ func (slf *DataSetList) Slice2interface(in interface{}) error {
 			idxv = idxv.Addr()
 		}
 
-		err := slf.RowData2interface(i, slf.dataSetList[slf.currentDataSetIdx].RowInfo, idxv)
+		err := slf.rowData2interface(i, slf.dataSetList[slf.currentDataSetIdx].RowInfo, idxv)
 		if err != nil {
 			return err
 		}
@@ -551,7 +551,7 @@ func (slf *DataSetList) Slice2interface(in interface{}) error {
 	return nil
 }
 
-func (slf *DataSetList) RowData2interface(rowIdx int, m map[string][]interface{}, v reflect.Value) error {
+func (slf *DataSetList) rowData2interface(rowIdx int, m map[string][]interface{}, v reflect.Value) error {
 	t := v.Type()
 	val := v.Elem()
 	typ := t.Elem()
@@ -573,7 +573,7 @@ func (slf *DataSetList) RowData2interface(rowIdx int, m map[string][]interface{}
 			columnData, ok := m[vtag]
 			if ok == false {
 				if !slf.blur {
-					return fmt.Errorf("Cannot find filed name %s", vtag[0])
+					return fmt.Errorf("Cannot find filed name %s", vtag)
 				}
 				continue
 			}
diff --git a/sysmodule/DBModule_test.go b/sysmodule/DBModule_test.go
index 0032f94..ada9031 100644
--- a/sysmodule/DBModule_test.go
+++ b/sysmodule/DBModule_test.go
@@ -15,9 +15,9 @@ func TestDBModule(t *testing.T) {
 
 	db.Init(100, "192.168.0.5:3306", "root", "Root!!2018", "QuantFundsDB")
 	db.OnInit()
-	res := db.Query("select * from tbl_fun_heelthrow where id >= 1")
-	if res.Err != nil {
-		t.Error(res.Err)
+	res, err := db.QueryEx("select * from tbl_fun_heelthrow where id >= 1")
+	if err != nil {
+		t.Error(err)
 	}
 	out := []struct {
 		Addtime int64  `json:"addtime"`
@@ -25,15 +25,15 @@ func TestDBModule(t *testing.T) {
 		Uuid    string `json:"uuid,omitempty"`
 		AAAA    string `json:"xxx"`
 	}{}
-	err := res.UnMarshal(&out)
+	err = res.UnMarshal(&out)
 	if err != nil {
 		t.Error(err)
 	}
 
 	sres := db.SyncQuery("select * from tbl_fun_heelthrow where id >= 1")
-	res = sres.Get(2000)
-	if res.Err != nil {
-		t.Error(res.Err)
+	res, err = sres.Get(2000)
+	if err != nil {
+		t.Error(err)
 	}
 
 	out2 := []struct {