I was setting up my rails evironment after long time and did some update to stack with mac os x update itself. Faced with small issue when tried to run rake db:create
rake aborted! uninitialized constant Mysql
I just have to fix it with change in gemfile , as it mentioned default sqlite3 gem , just add mysql gem in gemfile and it would be fixed . (note : do run bundle install )
Electronics For Everyone - How to run mac os x on a pc said
[...] Mysql issue on Mac OS X (shardul.wordpress.com) [...]