PostgreSQL中删除重复行(保留一行)
发布时间:2020-12-13 17:39:38 所属栏目:百科 来源:网络整理
导读:delete from table_name as ta where ta.唯一键 ( select max(tb.唯一键) from table_name as tb where ta.判断重复的列 = tb.判断重复的列);
delete from table_name as ta where ta.唯一键 <> ( select max(tb.唯一键) from table_name as tb where ta.判断重复的列 = tb.判断重复的列); (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
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