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  • SQLSERVER触发器触发INSERT,UPDATE,DELETE三种状态

    一个触发器内三种INSERT,UPDATE,DELETE状态

    CREATE   TRIGGER   tr_T_A   ON     T_A   for   INSERT,UPDATE,DELETE         

      如IF   exists   (select   *   from   inserted)   and   not   exists   (select   *   from   deleted)   则为   INSERT   

      如IF   exists(select   *   from   inserted   )   and   exists   (select   *   from   deleted)   则为   UPDATE   

      如IF   exists   (select   *   from   deleted)   and   not   exists   (select   *   from   inserted)则为   DELETE  

    插入操作(Insert):Inserted表有数据,Deleted表无数据 

    删除操作(Delete):Inserted表无数据,Deleted表有数据 

    更新操作(Update):Inserted表有数据(新数据),Deleted表有数据(旧数据) 

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  • 原文地址:https://www.cnblogs.com/guohu/p/12349698.html
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