pg.ddx.io  pgsql-performance@postgresql.org mailing list archive  

help / color / mirror / Atom feed

From: Richard Huxton <dev@archonet.com>
To: PFC <lists@peufeu.com>
Cc: mark@mark.mielke.cc, Mark Lewis <mark.lewis@mir3.com>
Cc: James Mansion <james@mansionfamily.plus.com>
Cc: Magnus Hagander <magnus@hagander.net>
Cc: Alexander Staubo <alex@purefiction.net>
Cc: Andy <frum@ar-sd.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: LIKE search and performance
Date: Fri, 25 May 2007 18:08:53 +0100
Message-ID: <46571825.30707@archonet.com> (raw)
In-Reply-To: <op.tsv6fevgcigqcu@apollo13>
References: <009501c79d4c$445428f0$0b00a8c0@mpsro.dom>
	<88daf38c0705230905u1a981102k691b47bd36011a80@mail.gmail.com>
	<4655DE75.4080506@mansionfamily.plus.com>
	<4655E64B.5050503@hagander.net>
	<4655FB8A.1040707@mansionfamily.plus.com>
	<1180040560.31471.262.camel@archimedes>
	<20070524215450.GA3858@mark.mielke.cc>
	<46569AA5.10205@archonet.com>
	<20070525141630.GA12162@mark.mielke.cc>
	<4657023A.20209@archonet.com>
	<op.tsv6fevgcigqcu@apollo13>

PFC wrote:
> 
>> OK - any application that allows user-built queries: <choose column: 
>> foo> <choose filter: contains> <choose target: "bar">
>>
>> Want another? Any application that has a "search by name" box - users 
>> can (and do) put one letter in and hit enter.
>>
>> Unfortunately you don't always have control over the selectivity of 
>> queries issued.
> 
>     -*- HOW TO MAKE A SEARCH FORM -*-
> 
>     Imagine you have to code the search on IMDB.
> 
>     This is what a smart developer would do

All good domain-specific tips to provide users with a satisfying 
search-experience.

None of which address the question of what plan PG should produce for: 
SELECT * FROM bigtable WHERE foo LIKE 's%'

-- 
   Richard Huxton
   Archonet Ltd

view thread (29+ messages)  latest in thread

Message-ID: <46571825.30707@archonet.com>
Permalink:  ../46571825.30707@archonet.com/
Also on:    postgresql.org/message-id/46571825.30707@archonet.com

copy link · copy postgr.es

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-performance@postgresql.org
  Cc: dev@archonet.com, lists@peufeu.com, mark.lewis@mir3.com, james@mansionfamily.plus.com, magnus@hagander.net, alex@purefiction.net, frum@ar-sd.net
  Subject: Re: LIKE search and performance
  In-Reply-To: <46571825.30707@archonet.com>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox