diff --git a/Src/Asp.NetCore2/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs b/Src/Asp.NetCore2/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
index f868a0b96..1d463016d 100644
--- a/Src/Asp.NetCore2/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
+++ b/Src/Asp.NetCore2/SqlSugar/Abstract/SugarProvider/SqlSugarProvider.cs
@@ -667,7 +667,7 @@ namespace SqlSugar
             }
             var allSql = sqlBuilder.GetUnionSql(allItems.Select(it => it.Key).ToList());
             var allParameters = allItems.SelectMany(it => it.Value).ToArray();
-            var resulut = this.Context.Queryable<ExpandoObject>().AS(UtilMethods.GetPackTable(allSql, "unionTable")).With(SqlWith.Null);
+            var resulut = this.Context.Queryable<object>().AS(UtilMethods.GetPackTable(allSql, "unionTable")).With(SqlWith.Null);
             resulut.AddParameters(allParameters);
             if (this.Context.CurrentConnectionConfig.DbType == DbType.Oracle && sqlBuilder.SqlSelectAll == "*")
             {