From: | "Mark Steben" <msteben(at)autorevenue(dot)com> |
---|---|
To: | <pgsql-performance(at)postgresql(dot)org> |
Subject: | Are piped columns indexable |
Date: | 2008-03-12 20:38:14 |
Message-ID: | 013201c88480$fe93f990$14010a0a@dei26g028575 |
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Thread: | |
Lists: | pgsql-performance |
Hi all,
Just upgraded to 8.2.5.
Given table t with columns a, b, c, d
And index on t using btree (a,b)
Is this indexable:
Select * from t where a || b = '124cab' (or whatever)
Assume a and b are defined as char(3)
I have tried various op classes and so far have just gotten sequential scans
Thanks for your time
Mark Steben
Senior Database Administrator
@utoRevenueT
A Dominion Enterprises Company
480 Pleasant Street
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413-243-4800 Home Office
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msteben <blocked::mailto:name(at)autorevenue(dot)com> @autorevenue.com
Visit our new website at
<blocked::http://www.autorevenue.com/> www.autorevenue.com
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