Constants in the foreighn key constraints - Mailing list pgsql-general

From aleksey ksenzov
Subject Constants in the foreighn key constraints
Date
Msg-id CAB5pSh6Hdw6A6hLAQ+d--6vPzxOs6=Ad4kk5DBei91iirZLNPQ@mail.gmail.com
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Responses Re: Constants in the foreighn key constraints  (Adrian Klaver <adrian.klaver@aklaver.com>)
Re: Constants in the foreighn key constraints  (Mimiko <vbvbrj@gmail.com>)
List pgsql-general
Hi team.
Latest time we faced several issues which wouldn't arise provided we have possibility to use constants in foreign key constraints.
brief example where it would be helpful:

table_a
( id uuid,
parent_id uuid,
is_deleted boolean
)
having possibility of FK (parent_id, false) to (id, is_deleted)
would disallow setting parent record deleted flag to true if they have children, or insert record with is_deleted = true parent.

Regards,
Aliaksei.

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