Re: pg_restore option --clean

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От Guillaume Lelarge
Тема Re: pg_restore option --clean
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Msg-id CAECtzeX9w6LZt5shybtEuHAS5aJXRWfCw9sTK5vOp0DSxjvE3Q@mail.gmail.com
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Ответ на Re: pg_restore option --clean  (Fabrice Chapuis <fabrice636861@gmail.com>)
Ответы Re: pg_restore option --clean
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Hi,

Le mer. 21 févr. 2024 à 15:01, Fabrice Chapuis <fabrice636861@gmail.com> a écrit :
But it does not work for the structure
# CONSTRAINT test FOREIGN KEY (id_tab_key) REFERENCES tab(id) ON DELETE cascade ON UPDATE CASCADE

ERROR:  cannot drop table tab because other objects depend on it


Yeah, ON DELETE and ON CASCADE are not the answer to your question.

pg_restore won't drop objects in cascade. There's no option for that. I'd guess the reason is that --clean only cleans the object it will restore. If other objects depend on it, pg_restore has no way to know how to recreate them, and you would end up with a not completely restored database.

Regards.
 
Regards,

Fabrice

On Wed, Feb 21, 2024 at 12:47 PM M Sarwar <sarwarmd02@outlook.com> wrote:
Look around for

ALTER TABLE TABLE-NAME
  ADD constraint fk-name foreign key col-name refers to tab-name ( col-name )
     on UPDATE cascase
   on DELETE CASCADE
;
Good luck,
Sarwar

From: Fabrice Chapuis <fabrice636861@gmail.com>
Sent: Wednesday, February 21, 2024 4:17 AM
To: pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>
Subject: Fwd: pg_restore option --clean
 


Hi,
The --clean option of pg_restore allows you to replace an object before being imported. However, dependencies such as foreign keys or views prevent the deletion of the object. Is there a way to add the cascade option to force the deletion?
Thanks for helping
Fabrice


--
Guillaume.

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