db/migrate/20200504200709_add_index_on_fingerprint_and_target_type_to_events.rb


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# frozen_string_literal: true

class AddIndexOnFingerprintAndTargetTypeToEvents < ActiveRecord::Migration[6.0]
  include Gitlab::Database::MigrationHelpers

  DOWNTIME = false

  disable_ddl_transaction!

  KEYS = [:target_type, :target_id, :fingerprint]

  def up
    add_concurrent_index :events, KEYS, using: :btree, unique: true
  end

  def down
    remove_concurrent_index :events, KEYS
  end
end