Re: how to use aggregate functions in this case - Mailing list pgsql-general

From David Johnston
Subject Re: how to use aggregate functions in this case
Date
Msg-id 1377566126903-5768636.post@n5.nabble.com
Whole thread Raw
In response to Re: how to use aggregate functions in this case  ("Janek Sendrowski" <janek12@web.de>)
Responses Re: how to use aggregate functions in this case  (David Johnston <polobo@yahoo.com>)
List pgsql-general
Janek Sendrowski wrote
> Hi,
>
>  
>
> thanks for all your answers.
>
> I'll have a try with the contains operator and the intrange, but
> before I'd like to know if this would work:
>
>  
>
> CASE WHEN a >= 0 AND a < 25
>
> CASE WHEN a >= 25 AND a < 50
>
>  
>
> There wouldn't be a double endpoint. I just have to decide which range
> the endpoint includes.
>
>  
>
> 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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