Thanks for the tip. I'm not so worried about insert/update, since this is a reporting database and the only inserts are done by backgrounded processes. Yes, w

Thanks for the tip. I'm not so worried about insert/update, since this is a reporting database and the only inserts are done by backgrounded processes. Yes, we have fk indexes. I don't see how we can filter down the number of rows, since the purpose of the outer query is to get a count of how many buyclicks there were for each offer. But I'll see if I can create a covering index that reduces the join cost. Thanks again!