On 10/6/21 2:59 PM, Bryn Llewellyn wrote:
> Everything that I say here applies to "make_timestamptz()", too. But my
> code examples need less typing when I use plain "make_timestamp()".
>
> (And sure enough, "raise info 'year: %', year" reports "-1".)
>
> The doc for "make_timestamp()" here:
>
> www.postgresql.org/docs/14/functions-datetime.html
> <http://www.postgresql.org/docs/14/functions-datetime.html>
>
What version of Postgres are you using?
Postgres 13:
select extract(year from '0001-01-01 00:00:00 BC'::timestamp);
date_part
-----------
-1
select make_timestamp(-1,1,1,2,30,0);
ERROR: date field value out of range: -1-01-01
Postgres 14:
select extract(year from '0001-01-01 00:00:00 BC'::timestamp);
date_part
-----------
-1
select make_timestamp(-1,1,1,2,30,0);
make_timestamp
------------------------
0001-01-01 02:30:00 BC
Postgres release notes
https://www.postgresql.org/docs/current/release-14.html#id-1.11.6.5.3
Allow make_timestamp()/make_timestamptz() to accept negative years
(Peter Eisentraut)
Negative values are interpreted as BC years.
--
Adrian Klaver
adrian.klaver@aklaver.com
