they may produce the same answer, but they are very different
let’s pretend that you and i are both sitting in new york and i ask you to find out how many people live in los angeles
you can do it two ways – ask everyone in los angeles to fly over to new york, and you count them as they get off the plane(s), or else you go over to los angeles, count them, and then come back with the answer
cool, now i get it. hope you could help me fine tune my next problem. i’d posted in PHP folder, it’s about TEXAS HOLDEM game project, i’d figured out my own algo(not with what suggested by member ‘hash’) but i think i have too many round tripsssssssss to DB server for just 2 tables.