Re: [PATCH]-hash index improving - Mailing list pgsql-hackers

From Jonah H. Harris
Subject Re: [PATCH]-hash index improving
Date
Msg-id 36e682920807171740u10ec4882u5754b3e605679224@mail.gmail.com
Whole thread Raw
In response to Re: [PATCH]-hash index improving  ("Dann Corbit" <DCorbit@connx.com>)
List pgsql-hackers
On Thu, Jul 17, 2008 at 7:37 PM, Dann Corbit <DCorbit@connx.com> wrote:

>> In which cases do we expect that hash indexes will beat btrees?
>
> Large table unique index equality search should be very fast with hashed
> index (and the only place where any advantage will be seen).

Yes, this is the exact use-case.  Likewise, Dan has provided a good
description regarding the primary implementation goals of a disk-based
hash table.

-- 
Jonah H. Harris, Sr. Software Architect | phone: 732.331.1324
EnterpriseDB Corporation | fax: 732.331.1301
499 Thornall Street, 2nd Floor | jonah.harris@enterprisedb.com
Edison, NJ 08837 | http://www.enterprisedb.com/


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