| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: age() function? |
| Date: | 2002-01-18 05:54:09 |
| Message-ID: | 200201180554.g0I5s9R23085@candle.pha.pa.us |
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| Lists: | pgsql-hackers |
Tom Lane wrote:
> Tatsuo Ishii <t-ishii(at)sra(dot)co(dot)jp> writes:
> > How come 10 mons == 9 mons 30 days?
>
> Because for purposes of comparisons, type interval assumes 1 month
> == 30 days (cf. interval_cmp_internal). Pretty grotty, I agree,
> but it's not easy to see how to do better.
I guess if we knew the month we could do better. :-)
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
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