Check +Aux, it could maybe work for you. Search this mailing list and the documentation.
Something I wrote: http://www.prodevtips.com/2008/10/09/pilog-solve-and-the-aux-relation/ /Henrik On Wed, Apr 14, 2010 at 9:58 AM, Mateusz Jan Przybylski < dexen.devr...@gmail.com> wrote: > Hello, > > there is a +Key prefix class for unique index for a relation. As far as I > understand it, it only works for single attribute of object. > Is there a reasonably straightforward way to have an index that requires > uniqueness of tuple/list of two or more attributes? > > > Regards, > -- > dexen > > /* apologies if this mail hits the list two times */ > -- > UNSUBSCRIBE: mailto:picol...@software-lab.de?subject=unsubscribe >