Honestly I can see no good reason why the Print module uses a path rather than a "class" and "id" as several other modules do, but it's what I have to live with. Using substring might work; I will see if that helps.

Nancy

From: T L <tloud365@gmail.com>
To: development@drupal.org
Sent: Mon, July 19, 2010 10:20:26 PM
Subject: Re: [development] MySql Performance Problem

What about substring() instead of concat() or adding a column for the nid in ppc and pmc?

Cheers,
tim