SELECT
        t.item_id as id,
        legkoe.img,legkoe.id
FROM
        dle_archive_cat as t
        LEFT JOIN dle_archive_legkoe as legkoe ON t.id=legkoe.id
						WHERE
							legkoe.id='$in[id]'


UNION ALL
SELECT
        t.item_id as id,
        noji.img,noji.id
FROM
        dle_archive_cat as t
        LEFT JOIN dle_archive_noji as noji ON t.id=noji.id
 WHERE
							noji.id='$in[id]'