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Message-ID: <572cc9d2-a981-4f0e-802a-69515dac1722@aklaver.com>
Date: Tue, 27 Aug 2024 10:37:17 -0700
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Subject: Re: Strange behaviors with ranges
To: Jean-Christophe Boggio <postgresql@thefreecat.org>,
 pgsql-general@lists.postgresql.org
References: <77691006-45f1-4ef9-bc1b-2eecd44f7d0d@thefreecat.org>
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From: Adrian Klaver <adrian.klaver@aklaver.com>
In-Reply-To: <77691006-45f1-4ef9-bc1b-2eecd44f7d0d@thefreecat.org>
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On 8/27/24 10:29 AM, Jean-Christophe Boggio wrote:
> Hello,
> 
> I have 2 very confusing behaviors when using ranges.
> 
> It all started with this query:
> 
>      WITH rangespaliers AS (
>          SELECT numrange( qtep1+1   , qtep2,  '[]') AS rangep FROM 
> paliers JOIN tmp_limitcontrats USING(idcontrat)
> --        SELECT numrange( qtep1+1   , qtep2,  '[]') AS rangep FROM 
> paliers WHERE idcontrat=1003
>      )
>      ,rangespaliers2 AS (
>          select *
>          FROM rangespaliers
>          WHERE rangep <> NUMRANGE(NULL, NULL) -- ERROR IS HERE
>      )
>      select * from rangespaliers2;
> 
> When I run this query, I get the error "Range lower bound must be less 
> than or equal to range upper bound".
> 
> (a) If I comment out the line marked "ERROR IS HERE", I don't have an 
> error (but I'm missing the filter of course).
> 
> (b) Also, if I uncomment line 3 and comment out line 2, I get the 
> correct behavior. Very strange thing is that tmp_limitcontrats has only 
> one row which contains "idcontrat=1003".

What does:

SELECT numrange( qtep1+1   , qtep2,  '[]') AS rangep FROM paliers WHERE 
idcontrat=1003

return?


> 
> This fails on PG 16.4 and 15.7
> 
> Thanks a lot for your enlightenment.
> 

-- 
Adrian Klaver
adrian.klaver@aklaver.com