Hi, I have a bunch of objects (CMF content but I don't think that's relevant to the question) which are conceptually closely related - they are different versions of the same content. I want to be able to ensure that a search returns at most one of the related objects. I can't think of any way to do this with stock ZCatalog, and I've been looking at Dieter's AdvancedQuery but can't quite sort it out there either. The semantics I want are like this: given a FieldIndex F, an object o, and a query parameter foo, o is a match if o's value for F is foo or o's value for F is "default" AND there are no relatives of o whose value for F is foo I think I could implement this with a bunch of post-processing of the query results, but that seems likely to be slowwww. any ideas? -- Paul Winkler http://www.slinkp.com