10 2016 档案

摘要:delete table from table a, ( select b.val1 ,b.val2 ,COUNT(1) as cnt from table b group by b.val1 ,b.val2 haval1g COUNT(1) > 1 )b where a.val1 = b.val1 and a.val2 = b.val2 and a.id not in ( sele... 阅读全文
posted @ 2016-10-14 15:50 のんきネコ 阅读(197) 评论(0) 推荐(0) 编辑