Best join columns

I'm considering the problems with changing all the CHARs in a database to VARCHAR2. I thought that that one would certainly be faster than the other during a join. I assume that the order of faster-to-slowest joining two columns as:

DATE
INT
FLOAT
[ VARCHAR | CHAR (?) ] Anybody have knowledge of this kind of infomation?

John Dennis Received on Fri Apr 15 1994 - 14:34:20 CEST