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# frozen_string_literal: true
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
# for more information on how to write migrations for GitLab.
class AddPromotedToEpicToIssuesIndex < ActiveRecord::Migration[5.2]
include Gitlab::Database::MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
def up
add_concurrent_foreign_key :issues, :epics, column: :promoted_to_epic_id, on_delete: :nullify
add_concurrent_index :issues, :promoted_to_epic_id, where: 'promoted_to_epic_id IS NOT NULL'
end
def down
remove_concurrent_index(:issues, :promoted_to_epic_id)
remove_foreign_key :issues, column: :promoted_to_epic_id
end
end
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