exports.up = async (knex) => knex.raw(`
    /* CREATE FUNCTION releases_is_showcased(release releases) RETURNS BOOLEAN AS $$
        SELECT COALESCE(entities.showcased, false) OR COALESCE(studios.showcased, false) FROM releases
        LEFT JOIN entities ON entities.id = releases.entity_id
        LEFT JOIN entities AS studios ON studios.id = releases.studio_id
        WHERE releases.id = release.id
    $$ LANGUAGE SQL STABLE; */

    CREATE FUNCTION releases_is_showcased(release releases) RETURNS BOOLEAN AS $$
        SELECT COALESCE((SELECT showcased FROM entities WHERE entities.id = releases.entity_id), false)
        OR COALESCE((SELECT showcased FROM entities WHERE entities.id = releases.studio_id), false) FROM releases
        WHERE releases.id = release.id
    $$ LANGUAGE SQL STABLE;
`);

exports.down = async (knex) => knex.raw(`
    DROP FUNCTION IF EXISTS releases_is_showcased;
`);