| From: | Mark Dilger <pgsql(at)markdilger(dot)com> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
| Subject: | Re: [SQL] Interval subtracting |
| Date: | 2006-03-01 23:43:58 |
| Message-ID: | 440631BE.2050501@markdilger.com |
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| Lists: | pgsql-hackers pgsql-patches pgsql-sql |
Tom Lane wrote:
> Mark Dilger <pgsql(at)markdilger(dot)com> writes:
>
>>This overall design seems more flexible than Tom's recent post in which he
>>stated that justify_days should call justify_hours internally.
>
>
> AFAIR I said the exact opposite.
>
> regards, tom lane
Tom Lane also wrote:
> assumption), but justify_days should be changed to be effectively a
> combination of both functions --- that is, it should fix all three
> fields using both the 30days and the 24hours assumptions. Then it could
> guarantee that all come out with the same sign.
How is changing justify days so that it touches the hours field different from
having justify_days call justify_hours?
mark
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