不能在 UPDATE 查询中使用子查询 - Can't use a sub-query inside an UPDATE query?

Can't use a sub-query inside an UPDATE query?

本文关键字：查询 UPDATE 不能 | 更新日期: 2023-09-27

当我使用此查询时，MySQL向我显示"HY000"错误："您无法在FROM子句中指定目标表'msg_pv'进行更新"。

问题似乎是查询和子查询针对同一个表......但这是我需要做的！

 <?php  $requete = $pdo->prepare('UPDATE msg_pv SET 
        lu=:lu
        WHERE id_ref_msg = :id_ref_msg AND date_message > ( SELECT MIN(date_message) FROM msg_pv WHERE id_ref_msg = :id_ref_msg AND lu="0" )');

注意：我已经在带有INNER JOIN的其他帖子中阅读了一些解决方案，但它适用于不同的表。

像这样尝试

UPDATE
  msg_pv AS t1
CROSS JOIN (
  SELECT MIN(date_message) AS date_message FROM msg_pv
  WHERE id_ref_msg = :id_ref_msg AND lu="0"
) AS t2
SET
  t1.lu = :lu
WHERE
  t1.date_message > t2.date_message