mysql置顶查询

使用前： SELECT `goods_id` FROM `sdb_goods` LIMIT 0 , 30   使用后 SELECT `goods_id` FROM `sdb_goods` ORDER BY `goods_id` = 4 DESC LIMIT 0 , 30 再来完善下， SELECT `goods_id` FROM `sdb_goods` ORDER BY `goods_id` =

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