I’m ALWAYS forgetting how to reset the postgres database on Heroku, because the typical rake db:drop/create/migrate won’t work on the Heroku command line. This is 99% for my own future reference, but to reset the database on Heroku:

  1.  heroku pg:reset
    •  it will ask you to type in your heroku url, follow the directions and do so!
  2.  heroku run rake db:migrate
    •  this may take a little while!

Easy breezy, I just always forget it!