rails ROLLBACK code example
Example 1: rails rollback multiple migrations
rake db:rollback STEP=n
# n = how many migrations you want to rollbackExample 2: rails db:rollback
rake db:rollback VERSION=n
# n = the version you want to rollback torake db:rollback STEP=n
# n = how many migrations you want to rollbackrake db:rollback VERSION=n
# n = the version you want to rollback to