SQL答疑一例

問題來自論壇網友提問，如下： 有網友給出回答如下： 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 這個

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