Re: How to get around LIKE inefficiencies?
Tom Lane <tgl@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
To: The Hermit Hacker <scrappy@hub.org>
Cc: Philip Warner <pjw@rhyme.com.au>, pgsql-hackers@postgresql.org
Date: 2000-11-06T03:17:21Z
Lists: pgsql-hackers
The Hermit Hacker <scrappy@hub.org> writes: > On Mon, 6 Nov 2000, Philip Warner wrote: >> At 21:59 5/11/00 -0500, Tom Lane wrote: >>>> Looks like a great kluge to me ;-) >> >> Hmph. I prefer to think of it as a 'user-defined optimizer hint'. ;-} > Except, if we are telling it to get rid of using the index, may as well > get rid of it altogether, as updates/inserts would be slowed down by > having to update that too ... Sure --- but do you have any other query types where the index *is* useful? If so, Philip's idea will let you suppress use of the index for just this one kind of query. regards, tom lane