diff --git a/Src/Asp.NetCore2/SqlSeverTest/UserTestCases/UnitTest/UnitTreaaafasa.cs b/Src/Asp.NetCore2/SqlSeverTest/UserTestCases/UnitTest/UnitTreaaafasa.cs
index 903ec4e19..ab62ace97 100644
--- a/Src/Asp.NetCore2/SqlSeverTest/UserTestCases/UnitTest/UnitTreaaafasa.cs
+++ b/Src/Asp.NetCore2/SqlSeverTest/UserTestCases/UnitTest/UnitTreaaafasa.cs
@@ -22,11 +22,11 @@ namespace OrmTest
                 {
                     Id = t.Id,
                     Name = t.AName,
-                    Amount = SqlFunc.Subqueryable<TableB>()
+                    Amount = SqlFunc.IsNull(SqlFunc.Subqueryable<TableB>()
                         .LeftJoin<TableC>((tableB, tableC) => tableB.TableCId == tableC.Id)
                         .LeftJoin<TableD>((tableB, tableC, tableD) => tableB.TableDId == tableD.Id)
                         .Where((tableB, tableC, tableD) => tableD.TableAId == t.Id)
-                        .Sum((tableB, tableC, tableD) => SqlFunc.IsNull(tableB.Quantity * tableB.Price, 0))
+                        .Sum((tableB, tableC, tableD) =>tableB.Quantity * tableB.Price), 0)
                 }).ToPageListAsync(pageIndex, pageSize, total).GetAwaiter().GetResult();
 
         }