小编blo*_*ter的帖子

我在 Postgres 中使用 CTE 编写了以下查询。现在我无法从中删除记录。

WITH cte AS (
    SELECT 
   
        firstname, 
        lastname, 
        country, 
        ROW_NUMBER() OVER (
            PARTITION BY 
                firstname, 
                lastname, 
                country
        ) row_num
     FROM 
        employee
) 
delete  from cte
where row_num >1

当我运行此查询时，它显示错误：

关系“cte”不存在

这是我的表“员工”的示例

id  firstname  lastname  country
1   "Raj"      "Gupta"   "India"
2   "Raj"      "Gupta"   "India"
3   "Mohan"    "Kumar"   "USA"
4   "James"    "Barry"   "UK"
5   "James"    "Barry"   "UK"
6   "James"    "Barry"   "UK"