Count(*) vs Count(1) - SQL Server

Question

Just wondering if any of you people use Count(1) over Count(*) and if there is a noticeable difference in performance or if this is just a legacy h

Answer 1

I would expect the optimiser to ensure there is no real difference outside weird edge cases.

As with anything, the only real way to tell is to measure your specific cases.

That said, I've always used COUNT(*).