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sql中怎么删除两条重复记录并保留一条 两条重复数据删除一条
SQL删除重复数据保留一条 delete table where id-标识列-not in(select min(id)from table group by Jnum,Wnum)excel删除重复数据保留一条,Excel是小伙伴们经常使...
SQL删除重复数据保留一条 delete table where id-标识列-not in(select min(id)from table group by Jnum,Wnum)excel删除重复数据保留一条,Excel是小伙伴们经常使...