EXPLAIN EXTENDED SELECT SQL_NO_CACHE
	objects.*,
	users.*
FROM objects 
JOIN users ON users.id = objects.user_id

SELECT SQL_NO_CACHE
		a.*,
        i.object_id,
        u.phone, u.first_name AS first_name, u.email AS user_email, u.user_type,
        ag.name AS agency_name, ag.phone AS agency_phone, ag.email AS agency_email, ag.url AS agency_site,
    IFNULL(i.object_id, UUID()) AS unq_ancestor,
    GROUP_CONCAT(i.gen_name, '.jpg' SEPARATOR ';') AS image_name
FROM
    objects a
    LEFT JOIN object_images i ON a.id = i.object_id
         JOIN users  u ON u.id = a.user_id
    LEFT JOIN organizations ag ON ag.id = u.organization_id
WHERE
    a.object_status = 2
    AND a.object_type IN (1, 2, 3, 4)
GROUP BY a.id