自己更新表MySQL

2023年4月27日 190次阅读

我无法弄清楚如何使这个查询运行….我想更新表,以便依赖于uuid它抓住’last_updated’的最低点并更新’created_on’…我不断得到’不能指定目标表’虽然我不知道为什么= /这是一个递归问题？

UPDATE dlp.address AS t1
SET created_on = (SELECT MIN(last_updated) 
                  FROM dlp.address AS t2 
                  WHERE t1.addressuuid = t2.addressuuid);

最佳答案

UPDATE  dlp.address AS t1
        INNER JOIN 
        (
            SELECT  addressuuid, MIN(last_updated) minDate
            FROM    dlp.address
            GROUP BY addressuuid
        ) AS t2 
            ON t1.addressuuid = t2.addressuuid
SET     t1.created_on = t2.minDate
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