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Re: multicolumn index column order

From: valgog <valgog(at)gmail(dot)com>
To: pgsql-performance(at)postgresql(dot)org
Subject: Re: multicolumn index column order
Date: 2007-07-23 17:13:16
Message-ID: 1185210796.731691.206490@g4g2000hsf.googlegroups.com (view raw or flat)
Thread:
Lists: pgsql-performance
On Jul 23, 7:00 pm, t(dot)(dot)(dot)(at)sss(dot)pgh(dot)pa(dot)us (Tom Lane) wrote:
> valgog <val(dot)(dot)(dot)(at)gmail(dot)com> writes:
> > how to build an multicolumn index with one column order ASCENDING and
> > another column order DESCENDING?
>
> Use 8.3 ;-)
>
> In existing releases you could fake it with a custom reverse-sorting
> operator class, but it's a pain in the neck to create one.
>
>                         regards, tom lane
>
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ok, thanks for a rapid answer, can live with the ((-flag),
text_column) functional multicolumn index by now.

Waiting for 8.3 :-)


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