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                ## 觸發器 + 由事件觸發某個操作 + 觸發觸發器的事件: insert update delete ## 創建一個執行語句觸發器 ```sql create trigger 觸發器名稱 觸發時機 觸發事件 on 表名 for each row SQL語句; ``` |觸發時機|說明| |-|-| |before|之前| |after|之后| ## 創建多個執行語句觸發器 ```sql create trigger 觸發器名稱 觸發時機 觸發事件 on 表名 for each row begin SQL語句 end; ``` ## 查看觸發器 ```sql show triggers \G; ``` ## 刪除觸發器 ```sql drop trigger 數據庫.觸發器名稱; ```
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