diff --git a/添加或修改.md b/添加或修改.md
index ad8688f..ea998c2 100644
--- a/添加或修改.md
+++ b/添加或修改.md
@@ -3,7 +3,7 @@
 IFreeSql 定义了 InsertOrUpdate 方法实现添加或修改的功能，利用数据库特性：(v1.5.0+)
 
 | Database | Features | Database | Features |
-| -- | -- |
+| -- | -- | -- | -- |
 | MySql | on duplicate key update | 达梦 | merge into |
 | PostgreSQL | on conflict do update | 人大金仓 | on conflict do update |
 | SqlServer | merge into | 神通 | merge into |