问题

You can't specify target table 'user_cut_record_0413' for update in FROM clause

原因

待更新/删除的数据集与查询的数据集撞车了，可以给后面的数据集加个别名，来解决撞车问题

报错语句

delete from user_cut_record_0413 where record_id IN ( select record_id from user_cut_record_0413 GROUP BY record_id HAVING COUNT(record_id) > 1 )

解析语句

delete from user_cut_record_0413 where record_id IN ( select record_id from user_cut_record_0413 GROUP BY record_id HAVING COUNT(record_id) > 1 )

解决方法

delete from user_cut_record_0413

where record_id IN (

	select record_id from (select * from user_cut_record_0413) t

	GROUP BY record_id

	HAVING COUNT(record_id) > 1

)

其实就是把后面的user_cut_record_0413 改成 (select * from user_cut_record_0413) t

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