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Message-ID: <3D1C44DD.9040400@biomax.de>
Date: Fri, 28 Jun 2002 13:13:33 +0200
From: Chantal Ackermann <chantal.ackermann@biomax.de>
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To: pgsql-sql@postgresql.org
Subject: creating functional index over multiple columns
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hello all,

I am new to this list, and I hope my request is well placed, here. I 
tried searching the archives but I wasn't lucky.

I want to create an index over two columns and one function:

the WHERE clause is:
WHERE lower(name)=? AND type_id=? AND syn_id=?

I know from the docs that I have to create on function that wraps these 
three values for creating the appropriate index. I have practically no 
idea how to do this (e.g. what type/set should this function return?).

Thanks a lot for pointers to documentation/former postings or any help
Cheers
Chantal