query optimizer operator choice - nested loops vs hash match (or merge)

Question

One of my stored procedures was taking too long execute. Taking a look at query execution plan I was able to locate the operation taking too long. It was a nested loop physi

Answer 1

I would not recommend trying to "fix" the plan by forcing the hints in one direction or another. Instead, you need to look to your indexes, statistics and the TSQL code to understand why you have a Table spool loading up 1.2billion rows from 19000.