Hi, is the following migration really supposed to be irreversible? class AddColumnsToUsers < ActiveRecord::Migration def change change_table :users do |t| t.integer :foo t.integer :bar end end end I''m using Rails 3.1 RC6 and when trying to redo this migration I''m getting ActiveRecord::IrreversibleMigration error. Cheers, Szymon -- You received this message because you are subscribed to the Google Groups "Ruby on Rails: Talk" group. To view this discussion on the web visit https://groups.google.com/d/msg/rubyonrails-talk/-/K7GD-bNoqqoJ. To post to this group, send email to rubyonrails-talk-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org To unsubscribe from this group, send email to rubyonrails-talk+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit this group at http://groups.google.com/group/rubyonrails-talk?hl=en.