delete from zb where id in (select id from zb group by prd_name,mf_cmp_name,info having count(id) > 1) and
id not in (select min(id) from zb group by prd_name,mf_cmp_name,info having count(id) > 1);求解答!!!
id not in (select min(id) from zb group by prd_name,mf_cmp_name,info having count(id) > 1);求解答!!!
解决方案 »
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