Message-Id: <5.1.0.14.0.20021222211601.04f26150@mail.rhyme.com.au>
Date: Sun, 22 Dec 2002 21:18:22 +1100
To: Tom Lane <tgl@sss.pgh.pa.us>, wweng@kencast.com
From: Philip Warner <pjw@rhyme.com.au>
Subject: Re: create index on function - why? 
Cc: pgsql-sql@postgresql.org
In-Reply-To: <14409.1013791606@sss.pgh.pa.us>
References: <3C6D3684.9040101@kencast.com>
 <3C6D3684.9040101@kencast.com>
Mime-Version: 1.0
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At 11:46 AM 15/02/2002 -0500, Tom Lane wrote:
>A functional index is sort of like a hidden, precomputed column added to
>your table.

One of the things I keep running into is the desire for a mixed 
functional/data index. I know the workaround is to build a function that 
combines all fields, but would it be hard to allow mixed indexes:

     create table users(id integer, last_name text);
     create index users_id_name on users(id,lower(name));

?


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