SQL答疑一例

问题来自论坛网友提问，如下： 有网友给出回答如下： UPDATE c1 AS a INNER JOIN  (SELECT haoma,MAX(price) AS bprice FROM c1 GROUP BY haoma) AS b ON a.`haoma`=b.haoma SET state= CASE WHEN a.`price` = B.bprice THEN 1 ELSE 0 END 这个

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