mysql - mysql删除查询出错

Question

delete from tx_table 
 where buyer_id in(select t.buyer_id     
                      from tx_table t                   
                      left join user_table u                  
                      on t.buyer_id=u.user_id                 
                      where u.user_id is null)

上述查询出现错误。错误是

sql error 1093:You can't specify target table 'tx_table' for update in FROM clause

请帮帮我

Answer 1

试试这个:

DELETE FROM tx_table 
WHERE buyer_id IN (
    SELECT buyer_id  FROM (
        SELECT DISTINCT  t.buyer_id AS buyer_id FROM tx_table 
        LEFT JOIN user_table u on t.buyer_id=u.user_id where u.user_id is null
    ) AS c
)