Thanks Tom,
This is helpful. I'm unable to share the queries but your reasoning helps nonetheless.
Another idea that popped into my head is to consider table partitioning. Am I correct to assume that (inevitable) joins could benefit from partitions when sub query criteria constraints results to a particular partition?
I know this is all too vague, but even brief opinions would help. I knew the current approach would converge to infinity in terms of query time :) My findings support that but I'm trying to write down some potential remedies and partial improvements as future directions for research.
Best regards
Seref