What data type is recommended for ID columns?

Question

I realize this question is very likely to have been asked before, but I\'ve searched around a little among questions on StackOverflow, and I didn\'t really find an answer to

Answer 1

A big disadvantage of using GUID keys is that it is difficult to perform "ad-hoc" queries by hand. Sometimes it is very useful that you can do this:

SELECT * FROM User where UserID=452245

With GUID keys this can become very annoying.

I would recommend 64 bit integers