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# frozen_string_literal: true
class ChangeIterationsTitleUniquenessIndex < ActiveRecord::Migration[6.0]
include Gitlab::Database::MigrationHelpers
INDEX_NAME = 'index_sprints_on_iterations_cadence_id_and_title'
OLD_INDEX_NAME = 'index_sprints_on_group_id_and_title'
disable_ddl_transaction!
def up
add_concurrent_index :sprints, [:iterations_cadence_id, :title], name: INDEX_NAME, unique: true
remove_concurrent_index_by_name :sprints, OLD_INDEX_NAME
end
def down
# noop
# rollback would not work as we can have duplicate records once the unique `index_sprints_on_group_id_and_title` index is removed
end
end
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