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Re: Using CTID system column as a "temporary" primary key

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On 3/29/23 09:43, Peter J. Holzer wrote:
On 2023-03-29 07:59:54 -0700, Adrian Klaver wrote:
On 3/29/23 07:19, Sebastien Flaesch wrote:
INSERT statements must not use the serial column, so you have to list
all columns of the table and provide only the values of the non-serial
columns. With Informix you could just specific a zero to get a new
generated serial, but seems this has never been considered with
PostgreSQL.

Yes it has:
[...]
insert into seq_test values(default, 'test');

Default is not the same as zero.

It accomplishes the same thing, a place holder value can be used to fire the sequence without column qualifying the insert/update. Furthermore it works over all columns. So I would say it has been considered by Postgres as a way to 'to get a new generated serial'.


         hp


--
Adrian Klaver
adrian.klaver@xxxxxxxxxxx






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