摘要: delete from tb_table where id not in (select maxid from (select max(id) as maxid from tb_table group by sample_code) b); tb_table:表名; id,sample_code:列 阅读全文
posted @ 2019-03-07 18:13 未码痴騲丶 阅读(740) 评论(0) 推荐(0) 编辑