Path: utzoo!attcan!uunet!ns-mx!iowasp.physics.uiowa.edu!maverick.ksu.ksu.edu!ux1.cso.uiuc.edu!brutus.cs.uiuc.edu!wuarchive!psuvax1!psuvm!cunyvm!ndsuvm1!plains!gus@plains.NoDak.edu
From: gus@plains.NoDak.edu
Newsgroups: comp.databases
Subject: Join Contest
Message-ID: <5265@plains.UUCP>
Date: 12 Jul 90 22:53:37 GMT
Sender: gus@plains.UUCP
Lines: 10



Recently I heard that an IBM-type db person claimed that it's
not uncommon in commercial db applications to join as many as
10-15 (maybe even 30) tables in a single query.

This seems like an incredible number of joins, especially if the
tables are large, on the order of 1/2 million tuples.

Any comment/references, etc.?