diff --git a/Src/Asp.Net/SqlSugar/Realization/SqlServer/DbMaintenance/SqlServerDbMaintenance.cs b/Src/Asp.Net/SqlSugar/Realization/SqlServer/DbMaintenance/SqlServerDbMaintenance.cs
index 20716c14e..1518f4a13 100644
--- a/Src/Asp.Net/SqlSugar/Realization/SqlServer/DbMaintenance/SqlServerDbMaintenance.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/SqlServer/DbMaintenance/SqlServerDbMaintenance.cs
@@ -51,8 +51,8 @@ namespace SqlSugar
                     WHERE syscolumns.id IN
                         (SELECT id
                          FROM sysobjects
-                         WHERE xtype IN('u',
-                                        'v') )
+                         WHERE upper(xtype) IN('U',
+                                        'V') )
                       AND (systypes.name <> 'sysname')
                       AND sysobjects.name='{0}'
                       AND systypes.name<>'geometry'