How to rollback Rails database migrations

When you want to perform database migrations in rails you use the following command:

rake db:migrate 

If you want to roll back your change you may need to find out what version your database is currently at and then roll back to a previous version:
To find the version use following command:

rake db:migration VERSION=? 

To roll back to previous version:

rake db:migrate VERSION=<version to roll back to>

To use it to roll back your most recent migration simply run:

rake db:rollback

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