Re: BUG #3624: EXTRACT(QUARTER FROM INTERVAL) always returns 1

I expect 0 because

SELECT EXTRACT(YEAR FROM INTERVAL '1 day'), EXTRACT(MONTH FROM INTERVAL '1
day')

returns 0,0

----- Original Message -----
From: "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "Eugene M. Hutorny" <eugene(at)ksf(dot)kiev(dot)ua>
Cc: <pgsql-bugs(at)postgresql(dot)org>
Sent: Friday, September 21, 2007 7:21 PM
Subject: Re: [BUGS] BUG #3624: EXTRACT(QUARTER FROM INTERVAL) always returns
1

"Eugene M. Hutorny" <eugene(at)ksf(dot)kiev(dot)ua> writes:
> SQL statemet
> SELECT EXTRACT(QUARTER FROM INTERVAL '1 day');

> Returns: 1
> Expected: 0

Why would you expect that? Quarters are numbered 1 through 4.
And it doesn't "always return 1":

regression=# SELECT EXTRACT(QUARTER FROM INTERVAL '3 months');
date_part
-----------
2
(1 row)

regression=# SELECT EXTRACT(QUARTER FROM INTERVAL '11 months');
date_part
-----------
4
(1 row)

regards, tom lane