This may be a situation where you classify the parameters and create a handful of queries that include or exclude each class. The same way we always have a dis

This may be a situation where you classify the parameters and create a handful of queries that include or exclude each class. The same way we always have a distinct query for selecting by ID, you have one with just username, one with demographics, one with account age or activity ranges, and then C(3,2) combinations of categories.