Re: PostgreSQL - Ordering Table based of Foreign Key
| От | Andreas Joseph Krogh |
|---|---|
| Тема | Re: PostgreSQL - Ordering Table based of Foreign Key |
| Дата | |
| Msg-id | VisenaEmail.59.40582f0598963470.17c4578691a@tc7-visena обсуждение исходный текст |
| Ответ на | Re: PostgreSQL - Ordering Table based of Foreign Key (Thomas Kellerer <shammat@gmx.net>) |
| Ответы |
Re: PostgreSQL - Ordering Table based of Foreign Key
|
| Список | pgsql-general |
På søndag 03. oktober 2021 kl. 10:49:49, skrev Thomas Kellerer <shammat@gmx.net>:
FOUTE K. Jaurès schrieb am 03.10.2021 um 09:48:
> I want to order tables based on the foreign key so that I can delete
> tables one by one without facing "ERROR: update or delete on table
> "table" violates foreign key constraint. DETAIL: Key is still
> referenced from table"
You can create the foreign key constraints with the "ON DELETE CASCADE" option.
Then Postgres will handle dependencies automatically for you.
But that means that *all* DELETEs will be cascaded.
Unfortunately, there is no DELETE FROM ... CASCADE option (similar to DROP)
There is TRUNCATE ... CASCADE
https://www.postgresql.org/docs/14/sql-truncate.html
--
Andreas Joseph Krogh
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