On Mon, May 21, 2018 at 12:54:56PM -0400, Tom Lane wrote: > Alexey Dokuchaev <danfe@xxxxxx> writes: > > Quick reality check question: are count(*) vs. count(_) equivalent > > above? > > Only if _ is guaranteed non-null ... which, as a rowtype result, it > probably is. But I'd use count(*) if you're concerned about speed. Understood. Yes, my primary concern (after correctness) is speed. Thank you all again for very helpful and prompt replies guys. ./danfe
