NAME

Conch::DB::ResultsExist

DESCRIPTION

A component for Conch::DB::ResultSet classes that provides the exists method.

See also DBIx::Class::Helper::ResultSet::Shortcut::ResultsExist, which is not usable in its present form due to https://github.com/frioux/DBIx-Class-Helpers/issues/54.

This code is postgres-specific.

USAGE

__PACKAGE__->load_components('+Conch::DB::ResultsExist');

METHODS

exists

Efficiently efficiently determines if a result exists, without needing to do a ->count. Essentially does:

select exists (select 1 from ... rest of your query ...);

Returns a value that you can treat as a boolean.

LICENSING

Copyright Joyent, Inc.

This Source Code Form is subject to the terms of the Mozilla Public License, v.2.0. If a copy of the MPL was not distributed with this file, You can obtain one at http://mozilla.org/MPL/2.0/.