When we try to run an Advanced Query, in the test button, to see if the query is having the expected behavior, it happens that sometimes we have errors and the error message is never clear (eg: after ')'). 

From what I suggest in continuation to my previous idea, of putting the numbering of the lines in the Adcanced Query, also indicate in this error message the line where we are failing. What do you think of this idea? It could help a lot.

Nuno Miguel Verdasca