Re: BUG in date_part

"Alexandru COSTIN" <acostin@NOSPAMrds.ro> writes:
>     I've discovered a bug in the date_part function. It returns 25 when
> doing select date_part('day','2000-03-26'::date);

Is 2000-03-26 a daylight savings changeover day where you live?
If so, this is a known bug that's fixed for 7.1.  date_part is not
the problem, it's being handed a wrong timestamp input value ---
there's a DST boundary bug in the date-to-timestamp converter.
In my timezone 2000-04-02 was a changeover day, and 7.0.2 gives:

select '2000-04-02'::date::timestamp;
        ?column?
------------------------
 2000-04-01 23:00:00-05
(1 row)

            regards, tom lane