diff --git a/sql/postgresql/注意.md b/sql/postgresql/注意.md
index 91db862..cc106bd 100644
--- a/sql/postgresql/注意.md
+++ b/sql/postgresql/注意.md
@@ -1,7 +1,21 @@
+请使用正则表达式批量替换项目中的以下内容
+
+1. find_in_set 替换成 array_position、string_to_array
+
+```
 find_in_set\(([^,]+),\s*([^)]+)\)
+```
 
+```
 array_position(string_to_array($2, ','), CAST($1 AS TEXT)) IS NOT NULL
+```
 
+2. CURRENT_TIMESTAMP 替换成 CURRENT_TIMESTAMP
+
+```
 sysdate\(\)
+```
 
+```
 CURRENT_TIMESTAMP
+```