如何在psql中使用row_number从表中删除重复项？

问题描述

我编写了以下查询，我正在使用greenplum db和dbeaver进行实施。

with cte as 
(select 
*,row_number() over(partition by first_name order by roll_num) row_num 
from table_name 
where roll_num in ('0011')) 
delete from cte where row_num>1;

以上查询返回错误。有人可以帮我吗！

解决方法

如何？

PostgreSQL DELETE statement with USING clause

参考：PostgreSQL Docs

,

请尝试这样对我有用：

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