How to Create a Query which will display attributes of the Task and Its Parent on the same row. ?
Accepted answer
While it is possible for a query to select work items based on the values of attributes in the parent work item, there is no way to display the value of those parent attributes in the query results in the same row as the child's attributes. The query result can only show the attributes of the work items that were actually selected.
-- David Olsen, IBM Rational, Jazz Process Team