Does one of the Query languages of XWIki support Union of results Select column1, column2, column3 from classX UNION Select column1, column2, column3 from ClassY In my use case it is required for a livetable. I could also complete the JSON in two steps. What is recommended? Gerritjan Koekkoek Vader van Rai Koekkoek (cdls) en voorzitter vereniging CdLS Visit our website<http://www.cdlsworld.org> Facebook<https://www.facebook.com/gerritjan.koekkoek> email&lt;gerritjan(a)cdlsworld.org&gt;