fohow_admin/db/migrate/20210816114688_create_group_message_relateds.rb

# encoding:utf-8
class CreateGroupMessageRelateds < ActiveRecord::Migration
  def up

    create_table :depart_records_message_groups do |t|
      t.integer :message_group_id
      t.integer :depart_record_id
    end


    add_index :depart_records_message_groups,
              [:message_group_id, :depart_record_id],
              :name => "idx_message_group_id"
  end

  def down
    drop_table :depart_records_message_groups
  end

end