I have replaced 3 temp tables in my batch with multiple CTEs.
I see remarkable 50% benefit in REads and Writes have reduced to 0, however, I wanted to know on the CPU.
Is CTE CPU Intensive? I am getting varying CPU results.
Also, I see from other questions that CTEs hit performance when table size is v great. Is that so?
"It Depends" on what the Temp Tables are being used for and how they are being used. Just like views and derived tables, CTEs can be quite good at performance and quite bad.
is pronounced ree-bar and is a Modenism for R
First step towards the paradigm shift of writing Set Based code: Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Helpful Links:
How to post code problemsHow to post performance problemsForum FAQs