How to change DATABASE_URL for a heroku application

Question

I wanted to use an external Database with my heroku application. But I\'m unable to edit the configuration cariables. I tried using GUI, Which says, Cannot overwrite attachm

Answer 1

As explained in this article, the correct syntax to set/add a configuration variable is

$ heroku config:set DATABASE_URL="postgresql://username:password@IP:PORT"

However, it looks like (see the comments) the DATABASE_URL has been deprecated and trying to update it will trigger an error.