Hello, sorry for asking again about a relevant question concerning GROUP_CONCAT but I think I found a problematic situation while I was running my queries. The previous question was this: http://answers.semanticweb.com/questions/20337/semantics-of-group_concat
I have a case in my queries where I want to combine GROUP_CONCAT with UNION and the VALUES clause.
AndyS suggested to use GROUP_CONCAT and UNION as following:
In this example, suppose we have for the ?variable1 and ?variable2 VALUES clauses bound to them with some values. Then something very strange happens.
I get for ?var1 and ?var2 all the values that both ?variable1 and ?variable2 contain. So both ?var1 and ?var2 are identical containing all the bindings for both variables!
I tested the query with FILTER (IN ()) and it work correctly. Also the results when I am not using GROUP_CONCAT and use UNION with VALUES are again correct.
Is this a Jena bug with GROUP_CONCAT and VALUES?
Thank you again for your help! Chris
EDIT ADDED EXAMPLE:
and the same is the result for ?var2.