Looking for trustworthy answers? Westonci.ca is the ultimate Q&A platform where experts share their knowledge on various topics. Connect with a community of experts ready to provide precise solutions to your questions on our user-friendly Q&A platform. Connect with a community of professionals ready to provide precise solutions to your questions quickly and accurately.

What steps should be taken to resolve the error "cannot perform an aggregate function on an expression containing an aggregate or a subquery," ensuring proper database query execution and data aggregation in SQL environments?