Re: PostgreSQL 7.0.2 Date Miscalculation

From: Justin Clift <jclift(at)iprimus(dot)com(dot)au>
To: JayGuerette(at)pobox(dot)com, pgsql-bugs(at)postgresql(dot)org
Subject: Re: PostgreSQL 7.0.2 Date Miscalculation
Date: 2001-04-07 04:52:26
Message-ID: 3ACE9D0A.9A4E6054@iprimus.com.au
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Hi Jay,

Which OS are you using? Mandrake-Linux 7.2 is known to have bugs in the
version of PostgreSQL they supply as RPM's.

Regards and best wishes,

Justin Clift

pgsql-bugs(at)postgresql(dot)org wrote:
>
> Jay Guerette (JayGuerette(at)pobox(dot)com) reports a bug with a severity of 2
> The lower the number the more severe it is.
>
> Short Description
> PostgreSQL 7.0.2 Date Miscalculation
>
> Long Description
> PostgreSQL 7.0.2
>
> The RELTIME function is miscalculating dates.
> (all my graphs were wrong today!)
>
> Sample Code
> The query:
>
> SELECT STAMP FROM SYSLOG WHERE DATE(STAMP)=DATE(TIMESTAMP('TODAY'-'1 WEEK'::RELTIME)) LIMIT 1;
>
> Produces:
>
> stamp
> ------------------------
> 2001-03-25 02:53:52-05
> (1 row)
>
> When the date is:
>
> Mon Apr 2 19:45:40 EDT 2001
>
> And the result SHOULD be:
>
> stamp
> ------------------------
> 2001-03-26 02:53:52-05
>
> I also have NO idea what this means:
>
> SELECT DATE(CURRENT_DATE - ('1 WEEK'::RELTIME));
> date
> ------------
> 0345-05-14
> (1 row)
>
> No file was uploaded with this report
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster

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