| From: | FOUTE K(dot) Jaurès <jauresfoute(at)gmail(dot)com> |
|---|---|
| To: | Andreas Joseph Krogh <andreas(at)visena(dot)com> |
| Cc: | Thomas Kellerer <shammat(at)gmx(dot)net>, PostgreSQL General <pgsql-general(at)lists(dot)postgresql(dot)org> |
| Subject: | Re: PostgreSQL - Ordering Table based of Foreign Key |
| Date: | 2021-10-03 14:40:33 |
| Message-ID: | CAHQ1jffzXJ_imh5g_34-tpNRVvKB3q=1ogJ=tNW-yRFrwFgVvQ@mail.gmail.com |
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| Lists: | pgsql-general |
Thanks for your input but I want to make a delete with where clause
On Sun, 3 Oct 2021, 10:26 Andreas Joseph Krogh, <andreas(at)visena(dot)com> wrote:
> På søndag 03. oktober 2021 kl. 10:49:49, skrev Thomas Kellerer <
> shammat(at)gmx(dot)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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