Thread: date -> timestamp casting bug (integer datetimes)
When integer datetimes are in use, the legal range of the "date" type
actually exceeds that of the "timestamp" type. However, the cast from
date => timestamp fails to take this into account:
postgres=# select '01-01-5874896'::date::timestamp;
timestamp
----------------------------
29355-07-05 15:41:44.48384
(1 row)
The cast works correctly with FP-based datetimes.
Should be simple to fix, but I won't have the free cycles to do it for a
little while, so if anyone wants to take a shot at it in the meanwhile,
they are more than welcome...
-Neil
This has been saved for the 8.4 release:
http://momjian.postgresql.org/cgi-bin/pgpatches_hold
---------------------------------------------------------------------------
Neil Conway wrote:
> When integer datetimes are in use, the legal range of the "date" type
> actually exceeds that of the "timestamp" type. However, the cast from
> date => timestamp fails to take this into account:
>
> postgres=# select '01-01-5874896'::date::timestamp;
> timestamp
> ----------------------------
> 29355-07-05 15:41:44.48384
> (1 row)
>
> The cast works correctly with FP-based datetimes.
>
> Should be simple to fix, but I won't have the free cycles to do it for a
> little while, so if anyone wants to take a shot at it in the meanwhile,
> they are more than welcome...
>
> -Neil
>
>
>
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--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://www.enterprisedb.com
+ If your life is a hard drive, Christ can be your backup. +
On Wed, 2007-16-05 at 11:46 -0400, Bruce Momjian wrote: > This has been saved for the 8.4 release No, this is a bug, and should be fixed in 8.3 and likely backported. I haven't had a chance to get to it yet, though. -Neil
OK, moved to patches queue. --------------------------------------------------------------------------- Neil Conway wrote: > On Wed, 2007-16-05 at 11:46 -0400, Bruce Momjian wrote: > > This has been saved for the 8.4 release > > No, this is a bug, and should be fixed in 8.3 and likely backported. I > haven't had a chance to get to it yet, though. > > -Neil > > > > ---------------------------(end of broadcast)--------------------------- > TIP 3: Have you checked our extensive FAQ? > > http://www.postgresql.org/docs/faq -- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB http://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. +
Neil Conway <neilc@samurai.com> writes:
> When integer datetimes are in use, the legal range of the "date" type
> actually exceeds that of the "timestamp" type. However, the cast from
> date => timestamp fails to take this into account:
Fixed, but I didn't bother to back-patch it.
regards, tom lane