sql删除重复保留唯一 Mysql如何去掉数据库中的重复记录？

Mysql如何去掉数据库中的重复记录？很简单 通过id删除DELETE FROMtable_name AS ta WHEREta.唯一键 <> (SELECTt.maxid FROM( SEL

Mysql如何去掉数据库中的重复记录？

很简单 通过id删除

DELETE

FROM

table_name AS ta

WHERE

ta.唯一键 <> (

SELECT

t.maxid

FROM

( SELECT max( tb.唯一键 ) AS maxid FROM table_name AS tb WHERE ta.判断重复的列 = tb.判断重复的列 ) t

)

mysql查找删除重复数据并只保留一条实例详解？

delete from `mygame_article` where title in (select title from `mygame_article` group by id having count(title) > 1) and id not in (select max(id) from `mygame_article` group by title having count(title) > 1) 随手写了个，前半句是选择title重复的数据，后半句是剔除id最大的，delete是删除的意思。。应该 思路是没问题的，这边不方便帮您测试