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help / color / mirror / Atom feedFrom: Heinemann, Manfred (IMS) <HeinemannM@imsweb.com>
To: pgsql-sql@lists.postgresql.org <pgsql-sql@lists.postgresql.org>
Subject: FK constraint question
Date: Wed, 1 Apr 2020 13:49:03 +0000
Message-ID: <e5f1fa241b2a4f67816c3f1915f49ff2@NAIAD.omni.imsweb.com> (raw)
Can something explain why something like the following could happen?
INSERT INTO task_history (task_id, user_id, task_date)
SELECT task_id, user_id, task_date
FROM task
WHERE task_id IN (1, 2, 3);
ERROR: insert or update on table "task_history" violates foreign key constraint "fk_task_history_task_id"
Detail: Key (task_id)=(1) is not present in table "task".
Thanks,
Manfred
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To: pgsql-sql@postgresql.org
Cc: HeinemannM@imsweb.com, pgsql-sql@lists.postgresql.org
Subject: Re: FK constraint question
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