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

时间 2020-12-29

标签数据库栏目 SQL 繁體版

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表a 的id字段不做唯一约束，表中aa，bb字段数据重复，目前希望aa,bb字段组合确定唯一一条数据，如何删除表a中的重复数据，保留id值最小的哪一条数据。执行sql： delete from a where id not in (select MIN(id) as id from a GROUP BY aa,bb) 错误:You can't specify target table

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1. You can't specify target table '' for update in FROM clause
2. update mysql row (You can't specify target table 'x' for update in FROM clause)
3. specify target table for update in FROM clause
4. You can't specify target table 'a' for update in FROM clause
5. you can't specify target table for update in from
6. MySQL can’t specify target table for update in FROM clause
7. MySQL - 1093异常 - You can't specify target table 't' for update in FROM clause
8. You can't specify target table 'table' for update in FROM clause
9. 1093 - You can't specify target table 'table' for update in FROM clause
10. You can't specify target table for update....

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