Re: delete query using CTE
От | David G. Johnston |
---|---|
Тема | Re: delete query using CTE |
Дата | |
Msg-id | CAKFQuwbVON0+kqusi6hKnPFkLtM3eiKCqOKP87H6BiNkqc3mNQ@mail.gmail.com обсуждение исходный текст |
Ответ на | delete query using CTE (Roger Bos <roger.bos@gmail.com>) |
Ответы |
Re: delete query using CTE
|
Список | pgsql-general |
On Sun, Mar 13, 2022 at 7:44 AM Roger Bos <roger.bos@gmail.com> wrote:
WITH cte AS
( SELECT *, ROW_NUMBER() OVER ( PARTITION BY ticker, date ORDER BY ticker, date) my_row_num FROM price_old)
DELETE FROM cte WHERE my_row_num > 1;I get the following error:ERROR: relation "cte" does not exist LINE 3: DELETE FROM cte WHERE my_row_num > 1;
Right...when all is said and done DELETE removes rows from permanent tables. While "cte" does exist it is a virtual table and so doesn't qualify. A permanent relation named cte does not exist from which permanent data can be deleted.
See the following for ways to deal with duplicate removal on incorrectly constrained tables.
David J.
В списке pgsql-general по дате отправления: