in reply to
1. Make sure patient_id is indexed.
2. Page the output. If you're using MySQL you can do this with LIMIT.
By rote learning.
Via Genetic memory.
It's provided by my firmware.
I just remember them.
Thirty days hath September
My computer gets it right, usually.
I just ask someone else.
Someone punches me on the first of the month.
Results (160 votes),