From "Tom Lane" <t...@sss.pgh.pa.us>
To "David G. Johnston" <david.g.johns...@gmail.com>
Cc s...@xss.de; "Pg Docs" <pgsql-docs@lists.postgresql.org>
Date 07.06.2022 23:07:30
Subject Re: Mention RETURNING ... INTO target
"David G. Johnston" <david.g.johns...@gmail.com> writes:
On Tue, Jun 7, 2022 at 1:30 PM PG Doc comments form <nore...@postgresql.org>
wrote:
It looks like INSERT INTO ... RETURNING allows defining a target for the
returned values like SELECT ... INTO does.
That isn't how it works. RETURNING simply turns INSERT into a result set
producing SQL Command. And SQL doesn't have a concept of "target"
(variables) in the sense you are thinking. pg/pgsql does, allowing result
set data to be placed into variables.
Right. And in fact this *is* documented in the context of pl/pgsql:
https://www.postgresql.org/docs/current/plpgsql-statements.html#PLPGSQL-STATEMENTS-SQL-ONEROW
regards, tom lane
Thanks for the pointer to the documentation. I did not think to look for
"single-row results" when looking for an assumed option of "INSERT".
s.
