Re: Changing Primary Index Question

Posted in 2003

Bill Hamilton — Wed, 3 Sep 2003 15:49:50 -0500 — source: Usenet: comp.databases.informix

With a single column index, you could have just one row that had a null in that column. With multiple columns, I believe you can have as many as you want, so long as the whole key is unique on each row. ----- Original Message ----- From: "John Carlson" <john_carlson@whsmithusa.com> To: <informix-list@iiug.org> Sent: Wednesday, September 03, 2003 1:24 PM Subject: Re: Changing Primary Index Question > As far as I know, the definition of a PK doesn't allow a nullable > column . . . . am I wrong? sending to informix-list