Thanks for the clarification. The behaviour I'm seeing is that OR queries are almost *twice* as performant as AND queries, so that's probably down to my specific setup/data. I'll try to investigate further.
Lars On Mon, 12 May 2008 19:35:00 -0400 "Yonik Seeley" <[EMAIL PROTECTED]> wrote: > In general, AND will perform better than OR (because of skipping in > the scorers). But if the number of documents matching the AND is > close to that matching the OR query, then skipping doesn't gain you > much and probably has a little more overhead. > > -Yonik > > On Sun, May 11, 2008 at 4:04 AM, Lars Kotthoff <[EMAIL PROTECTED]> wrote: > > Dear list, > > > > during some performance experiments I have found that queries with ORed > > search > > terms are significantly faster than queries with ANDed search terms, > > everything > > else being equal. > > > > Does anybody know whether this is the generally expected behaviour? > > > > Thanks, > > > > Lars > > >
