Is SQL DATEDIFF(year, ..., ...) an Expensive Computation?
- by rlb.usa
I'm trying to optimize up some horrendously complicated SQL queries because it takes too long to finish.
In my queries, I have dynamically created SQL statements with lots of the same functions, so I created a temporary table where each function is only called once instead of many, many times - this cut my execution time by 3/4.
So my question…