For those new to data analysis, I will explain the differences and proper usage of the two tools for organizing complex ...

I wrote a query (with lots of help, see my painfully plentiful other threads) using a correlated subquery and it takes 5.78 seconds PER RECORD to return results. The SAME query, only I select the ...

It's been far too long since I did any real db work, and even then it was simple stuff. Now I feel in way over my head and I don't remember the basic vocabulary to help find the answers I need.