Advanced queries aren't always easy to get rigth from the first time. Often, you want to go in steps to the final solution.
I find it very annoying that It is impossible to test the adv query if the output structure doens not correspond to the e.g. selection made in the query.
Certianly for complex queries, one often has to create a specific structure to match the result.
In a debugging phase, this is a waste of time.
Can't there be an option to test the query wihout having to set the output structure? Can't the platform create a temporary one based on the query selection?