diff --git a/orm.go b/orm.go
index 618bb1b..765a6db 100644
--- a/orm.go
+++ b/orm.go
@@ -265,7 +265,9 @@ func (dba *Orm) BuildSql(operType ...string) (a string, b []interface{}, err err
 		return
 	}
 	// 解析字段
-	if inArray(dba.GetIBinder().GetBindType(), []interface{}{OBJECT_STRUCT, OBJECT_STRUCT_SLICE}) {
+	// 如果有union操作, 则不需要
+	if inArray(dba.GetIBinder().GetBindType(), []interface{}{OBJECT_STRUCT, OBJECT_STRUCT_SLICE}) &&
+		dba.GetUnion()==nil{
 		dba.fields = getTagName(dba.GetIBinder().GetBindResult(), TAGNAME)
 	}
 	if len(operType) == 0 || (len(operType) > 0 && strings.ToLower(operType[0]) == "select") {
diff --git a/orm_query_test.go b/orm_query_test.go
index 43c4f02..e08e791 100644
--- a/orm_query_test.go
+++ b/orm_query_test.go
@@ -7,19 +7,11 @@ import (
 )
 
 func TestOrm_First(t *testing.T) {
-	db := DB()
-	var u = Users{}
-	var err error
-	//res, err := db.Table(&u).Get()
-	//if err != nil {
-	//	t.Error(err.Error())
-	//}
-	//t.Log(res)
-	err = db.Table(&u).Select()
+	res,err := DB().Table("users").First()
 	if err != nil {
 		t.Error(err.Error())
 	}
-	t.Log(u)
+	t.Log(res)
 }
 
 func TestOrm_Select(t *testing.T) {
@@ -161,6 +153,16 @@ func TestOrm_Count(t *testing.T) {
 	t.Log(res, db.LastSql())
 }
 
+func TestOrm_Count2(t *testing.T) {
+	var u Users
+	var count int64
+	count, err := DB().Table(&u).Count()
+	if err != nil {
+		t.Error(err.Error())
+	}
+	t.Log(count)
+}
+
 func TestOrm_Chunk(t *testing.T) {
 	orm := DB()