php poll程序使用mysql

Question

I'm working on a poll program and am wondering, so far all of the sample I've seen makes use of insert then counting the total votes for each answers. I find it redundant to have a table with a field of answers and a lot of yes, no and maybe

So I am thinking, is it efficient for me to use update instead of insert, for example, if a user vote yes, the yes field will increment? Will it introduce problems with accuracy if users simultaneously vote?

Answer 1

Your database uses transactions, the update will be atomic. There's no problem with accuracy.

UPDATE MyTable SET MyColumn=MyColumn+1 WHERE MyVoteID=123