Are piped columns indexable
| От | Mark Steben |
|---|---|
| Тема | Are piped columns indexable |
| Дата | |
| Msg-id | 013201c88480$fe93f990$14010a0a@dei26g028575 обсуждение исходный текст |
| Ответы |
Re: Are piped columns indexable
|
| Список | 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
@utoRevenue™
A Dominion Enterprises Company
480 Pleasant Street
Suite B200
Lee, MA 01238
413-243-4800 Home Office
413-243-4809 Corporate Fax
msteben@autorevenue.com
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