Hi Dan, thanks for you answers. I found out that this behaviour has been described before in Bug 28078 - Cannot query for category pages in a specific category in March 2011 [1].
The query that you proposed: {{#ask: [[Subcategory of::+]] }} correctly returns the list of all categories that are subcategories. But when I extend the query to retrieve only the subcategories of a certain category, then the query does not return any results. Best regards, Basil [1] https://bugzilla.wikimedia.org/show_bug.cgi?id=28078 Am 29.08.2011 15:27, schrieb Dan Bolser: > On 22 August 2011 08:18, Basil Ell<basil....@kit.edu> wrote: >> Hi, >> >> I am trying to query for the list of all subcategories of a given category, >> but this does not return any results. >> >> I created a category C0 >> and two categories C0-0 and C0-1 with are annotated with [[Category:C0]]. >> When I browse their properties i see that they are "subcategory of" C0 - >> seems to be alright. >> >> But neither this query >> {{#ask: [[Subcategory of::C0]] | format=table}} > What happens if you try: {{#ask: [[Subcategory of::+]] }} ? > > >> or this query >> {{#ask: [[:Category:+]] [[Subcategory of::C0]] | format=table}} >> returns any result. >> >> What do I do wrong here? >> >> I am using MediaWiki 1.17alpha and Semantic MediaWiki (1.5.0.a-SVN). >> $smwgQFeatures in SMW_Settings.php is set to SMW_PROPERTY_QUERY >> | SMW_CATEGORY_QUERY | SMW_CONCEPT_QUERY | SMW_NAMESPACE_QUERY >> | SMW_CONJUNCTION_QUERY | SMW_DISJUNCTION_QUERY; >> >> Best regards, >> Basil >> >> ------------------------------------------------------------------------------ >> uberSVN's rich system and user administration capabilities and model >> configuration take the hassle out of deploying and managing Subversion and >> the tools developers use with it. Learn more about uberSVN and get a free >> download at: http://p.sf.net/sfu/wandisco-dev2dev >> _______________________________________________ >> Semediawiki-user mailing list >> semediawiki-u...@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/semediawiki-user >> > ------------------------------------------------------------------------------ > EMC VNX: the world's simplest storage, starting under $10K > The only unified storage solution that offers unified management > Up to 160% more powerful than alternatives and 25% more efficient. > Guaranteed. http://p.sf.net/sfu/emc-vnx-dev2dev > _______________________________________________ > Semediawiki-user mailing list > semediawiki-u...@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/semediawiki-user > ------------------------------------------------------------------------------ Special Offer -- Download ArcSight Logger for FREE! Finally, a world-class log management solution at an even better price-free! And you'll get a free "Love Thy Logs" t-shirt when you download Logger. Secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsisghtdev2dev _______________________________________________ Semediawiki-devel mailing list Semediawiki-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/semediawiki-devel