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mysql 多表联合删除

2022-07-03 00:01:00 【开心大爆炸】

  delete from  A WHERE A.name in (SELECT name FROM B WHERE TIMESTAMPDIFF(DAY,time,NOW()) >= 30);//B表中插入数据与现在时间相比超过三十天的，，删除A表中对应的数据
        delete from  C WHERE C.task_name in (SELECT name FROM B WHERE TIMESTAMPDIFF(DAY,time,NOW()) >= 30);//B表中插入数据与现在时间相比超过三十天的，，删除C表中对应的数据
delete from B where TIMESTAMPDIFF(DAY,time,NOW()) >= 30);