相关疑难解决方法(0)

我正在使用postgreSQL 9.1,我想使用这个技巧从我的表中删除重复项:https: //stackoverflow.com/a/3822833/2239537

所以,我的查询看起来像这样:

WITH cte
 AS (SELECT ROW_NUMBER() 
 OVER (PARTITION BY code, card_id, parent_id 
     ORDER BY id DESC) RN
     FROM card)
DELETE FROM cte
WHERE RN > 1

但它告诉我

ERROR: relation "cte" does not exist
SQL state: 42P01
Character: 157

但是这个说法很好:

WITH cte
 AS (SELECT ROW_NUMBER() 
 OVER (PARTITION BY code, card_id, parent_id 
     ORDER BY id DESC) RN
     FROM merchantcard)
SELECT * FROM cte
WHERE RN > 1

任何想法如何让它工作？谢谢!