"Jozsef Szalay" <[EMAIL PROTECTED]> writes:
> One would
> think that Postgres will use the index to look up the matches, but
> apparently that is not the case. It performs a full table scan. My
> query looks something like this:
>
> SELECT * FROM table WHERE name LIKE 'smith%';
There are two p
The var_char_pattern_ops operator group has made the difference.
Thanks for the help!
Jozsef
-Original Message-
From: Mark Kirkwood [mailto:[EMAIL PROTECTED]
Sent: Thursday, March 02, 2006 7:29 PM
To: Jozsef Szalay
Cc: pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Like 'name%'
Jozsef Szalay wrote:
Hi all,
I have to provide a pretty standard query that should return every row
where the NAME attribute begins with a specific string. The type of the
NAME column is varchar. I do have an index for this column. One would
think that Postgres will use the index to look u
Hi all,
I have to provide a pretty standard query that should return
every row where the NAME attribute begins with a specific string. The type of
the NAME column is varchar. I do have an index for this column. One would think
that Postgres will use the index to look up the matches, but
Added to TODO:
* Improve port/qsort() to handle sorts with 50% unique and 50% duplicate
value [qsort]
This involves choosing better pivot points for the quicksort.
---
Dann Corbit wrote:
>
>
