Re: constraint with reference to the same table
Victor Yegorov <viy@nordlb.lv>
From: Victor Yegorov <viy@nordlb.lv>
To: Rudi Starcevic <rudi@oasis.net.au>
Cc: Stephan Szabo <sszabo@megazone23.bigpanda.com>, Postgres Performance <pgsql-performance@postgresql.org>
Date: 2003-05-15T02:21:35Z
Lists: pgsql-performance
* Rudi Starcevic <rudi@oasis.net.au> [15.05.2003 05:15]: > Perhaps I also need a 3rd Index ? > > One for Business's > One for People and > One for Business_People. > > I think I may need the 3rd Index for query's like You don't need it. Primary key on that 2 columns will create a unique index on them. Of course, if you left things unchanged - you'll need to create business_people index yourself. execute: => \d business_people and take a glance on a line, describing primary key. -- Victor Yegorov