oracle去重:综合了别人的记录
时间:2022-03-14 03:53
oracle去重:综合了别人的记录,大致有以下两种看起来顺眼。 1.delete from t where rowid not in (select min(rowid) from t group by 去重字段); 举个栗子: --去重 delete from PTW_I_METHOD_DEFINE_TEMP where id not in (select min(id) from PTW_I_METHOD_DEFINE_TEMP group by no); 2.(注意:distinct是记录完全一致的重复。而上面是以某一列的值是否重复来决定) insert into 临时表 select distinct mobile from 原表; drop table 原表; rename 临时表名 to 原表名; 来源: <http://blog.163.com/k_doll/blog/static/7845013020091361626770/>