Mysql 错误代码：1093。无法在FROM子句（Delete查询）中为update指定目标表“tbl1”

尝试删除具有某些条件的记录，但出现以下错误： 错误代码：1093

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在MySQL中，您不能修改SELECT部件中使用的同一个表。请参见此处的答案： 试试这个：

DELETE FROM tbl1
WHERE id NOT IN (
    SELECT id FROM (
        select max(id) as id from tbl1 group by device_name
    ) AS c
)
and date(cast(traptime as datetime))< date_sub(current_date, interval 200  day)

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工作很好，谢谢你的快速回答：@Code Monk:-不客气！如果答案在另一个问题中，只需将其标记为重复，不要发布仅链接的答案。

DELETE FROM tbl1
WHERE id NOT IN (
    SELECT id FROM (
        select max(id) as id from tbl1 group by device_name
    ) AS c
)
and date(cast(traptime as datetime))< date_sub(current_date, interval 200  day)