According to Herouth Maoz:
>
> Actually, it is an RTFM...
>
> >From the manpage of pgbuiltin (my postgres version is 6.2.1):
>
> For the date_part() and date_trunc() functions, arguments
> can be `year', `month', `day', `hour', `minute', and
> `second', as well as the more specialized quantities
> `decade', `century', `millenium', `millisecond', and
> `microsecond'. date_part() allows `dow' to return day of
> week and `epoch' to return seconds since 1970 for datetime
> and 'epoch' to return total elapsed seconds for timespan.
Is there any documentation (or is any needed) for the equivalent functions
mapped to their SQL92 "extract (field from value)" syntax?
Since I just ran across:
psql=> select date_part('month','01-01-1998'::date);
date_part
---------
12
(1 row)
and the extract() does the same in this case, I'm being a little cautious...
Les Mikesell
les@mcs.com