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# frozen_string_literal: false
class CreateGroupsUsers < ActiveRecord::Migration[4.2]
def self.up
create_table :groups_users, :id => false do |t|
t.column :group_id, :integer, :null => false
t.column :user_id, :integer, :null => false
end
add_index :groups_users, [:group_id, :user_id], :unique => true, :name => :groups_users_ids
end
def self.down
drop_table :groups_users
end
end
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