07 2018 档案

mysql 删除重复项
摘要：DELETE FROM j_rank_rise_record WHERE id NOT IN ( SELECT id FROM ( SELECT * FROM j_rank_rise_record group by userid,rank_lv ) t ) 阅读全文
posted @ 2018-07-09 11:32 不知为何就叫呵呵 阅读(105) 评论(0) 推荐(0) 编辑

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