Hello all,
I've heard persistent rumors that joining two table based on an integer
id "must be" or "is" faster than joining on a string id.
While I'd believe the "must be", does anyone have any pointers to (or
evidence of) how much faster?
I.e.; if the difference is 10 times, then it's worth us
rewriting/testing/upgrading an application. If it's 10%, then it's not.
Thanks in advance,
Veronika Megler