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)

我收到上述查询的错误。错误是

sql error 1093：您无法为更新指定目标表'tx_table' FROM子句

请帮帮我

Answer 1

试试这个

DELETE FROM tx_table dlt
INNER JOIN (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) tmp ON dlt.buyer_id = tmp.buyer_id;

Answer 2

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
)

Answer 3

也许sql句子错了。做：

 $delete = 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);
echo delete

现在采取＆＃34; echo＆＃34;句子并转到mysql服务器并在sql选项卡中写入粘贴。如果你这样做，你知道是一个SQL错误。

mysql删除查询出错

3 个答案: