-- 冗余数据 SELECT l.* FROM t_lifeservice_orders l, (SELECT t.* FROM t_lifeservice_orders t WHERE t.orderStatus = 2 GROUP BY t.orderNum, t.orderStatus, t.channelCode HAVING COUNT(t.orderStatus) > 1) AS o WHERE l.orderNum = o.orderNum AND l.orderStatus = o.orderStatus AND l.channelCode = o.channelCode AND l.orderStatus = 2 ;
查询冗余数据
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