NU
rails g migration AddPartNumberToProducts
Aggiungere riferimenti guide di migrazione
class AddUserToUploads < ActiveRecord::Migration
def change
add_reference :uploads, :user, index: true
end
end
NU
def change
execute <<-SQL
UPDATE table1
SET column1 = "value"
SQL
end
rials db
bin/rails db:migrate:down VERSION=YYYYMMDDHHMMSS