Re: how to use aggregate functions in this case

From: David Johnston <polobo(at)yahoo(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Re: how to use aggregate functions in this case
Date: 2013-08-27 01:15:26
Message-ID: 1377566126903-5768636.post@n5.nabble.com
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Janek Sendrowski wrote
> Hi,
>
> &nbsp;
>
> thanks for all your answers.
>
> I&#39;ll have a try with the contains operator and the intrange, but
> before I&#39;d like to know if this would work:
>
> &nbsp;
>
> CASE WHEN a &gt;= 0 AND a &lt;&nbsp;25
>
> CASE WHEN a &gt;=&nbsp;25 AND a &lt; 50
>
> &nbsp;
>
> There wouldn&#39;t be a double endpoint. I just have to decide which range
> the endpoint includes.
>
> &nbsp;
>
> Janek Sendrowski

Yes, using explicit comparison operators with "AND" will work just fine; its
just a little more verbose so the other options, if available, are preferred
from a readability standpoint. I do not know whether the different options
may have different performance characteristics.

David J.

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