diff --git a/work常用/linux/Linux命令.md b/work常用/linux/Linux命令.md
index 1dac1e2..ce290e1 100644
--- a/work常用/linux/Linux命令.md
+++ b/work常用/linux/Linux命令.md
@@ -451,6 +451,11 @@ firewall-cmd --reload
 | 删除           | dd 删除当前行                   |
 | 方向键               | h：左 j:下 k：上 l：右                                |
 
+```shell
+# 全局查找替换
+:%s/查找字符串/替换字符串/g
+```
+
 # 六、环境变量
 ## 6.1 java 环境变量
 ```shell
diff --git a/work常用/数据库/Postgresql 常用SQL.md b/work常用/数据库/Postgresql 常用SQL.md
index d0e7917..5ac94f5 100644
--- a/work常用/数据库/Postgresql 常用SQL.md	
+++ b/work常用/数据库/Postgresql 常用SQL.md	
@@ -19,6 +19,12 @@ select relname, pg_size_pretty(pg_relation_size(relid)) as size from pg_stat_
 select * from pg_locks where granted='f'
 8.结束死锁进程
 select pg_terminate_backend(pid) from (select pid from pg_locks where granted='f')
+9.查看表结构
+SELECT  
+    a.attname as column_name,  
+    format_type(a.atttypid,a.atttypmod) as data_type,  
+    col_description(a.attrelid,a.attnum) as comment  
+FROM  pg_class as c,pg_attribute as a where a.attrelid = c.oid and a.attnum>0 and c.relname = 'Edge_0101';
 ```
 ## 二、函数