摘要:
delete from tb1 where id in(select t2.minnum from(select MIN(t1.id) as minnum,t1.col1 as ars ,COUNT(1) as cx from tb1 t1 group by t1.col1)t2)select * ... 阅读全文
posted @ 2015-05-10 15:33
听哥哥的话
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