db/migrate/20170301101006_add_ci_runner_namespaces.rb


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class AddCiRunnerNamespaces < ActiveRecord::Migration[4.2]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  def change
    create_table :ci_runner_namespaces do |t|
      t.integer :runner_id
      t.integer :namespace_id

      t.index [:runner_id, :namespace_id], unique: true
      t.index :namespace_id
      t.foreign_key :ci_runners, column: :runner_id, on_delete: :cascade
      t.foreign_key :namespaces, column: :namespace_id, on_delete: :cascade
    end
  end
end