[Phplib-users] user_id versus username in auth_user schema

[LS <alp...@ya...>]

Hi-
    Please excuse this question if it's in the archives, but the archives don't
seem to be available now. 
    Why is there both a user_id and username column in the auth-user table? The
username is declared unique, so why not just make it the primary key and get rid of
the user_id column?



__________________________________________________
Do You Yahoo!?
LAUNCH - Your Yahoo! Music Experience
http://launch.yahoo.com