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