Обсуждение: [DOCS] CREATE SEQUENCE minvalue for descending sequence
Hello,
while reading your documentation about create sequence I found that you mention the minvalue for a descending sequence is -263-1.
But as far as I know the minvalue of long is -263+1.
The mentioned documentation is at: https://www.postgresql.org/docs/9.6/static/sql-createsequence.html
On Wed, Aug 16, 2017 at 10:00 PM, Klemens Eisenstecken <klemens.eisenstecken@gmail.com> wrote: > Hello, > > while reading your documentation about create sequence I found that you > mention the minvalue for a descending sequence is -2^63-1. > > But as far as I know the minvalue of long is -2^63+1. > > The mentioned documentation is at: > https://www.postgresql.org/docs/9.6/static/sql-createsequence.html Logically the minimum value of long is -2^63, the maximum being 2^63 - 1, but as you say the default minvalue of a descending sequence is -2^63 + 1, so the docs are wrong. Note that Postgres has changed this idiotic minimal value behavior in 10, using now the real minimum value of the types used with a sequence. -- Michael
Вложения
Thank you for the clarification!
Michael Paquier <michael.paquier@gmail.com> schrieb am Do., 17. Aug. 2017 um 04:14 Uhr:
On Wed, Aug 16, 2017 at 10:00 PM, Klemens Eisenstecken
<klemens.eisenstecken@gmail.com> wrote:
> Hello,
>
> while reading your documentation about create sequence I found that you
> mention the minvalue for a descending sequence is -2^63-1.
>
> But as far as I know the minvalue of long is -2^63+1.
>
> The mentioned documentation is at:
> https://www.postgresql.org/docs/9.6/static/sql-createsequence.html
Logically the minimum value of long is -2^63, the maximum being 2^63 -
1, but as you say the default minvalue of a descending sequence is
-2^63 + 1, so the docs are wrong. Note that Postgres has changed this
idiotic minimal value behavior in 10, using now the real minimum value
of the types used with a sequence.
--
Michael