SELECT requests.id, "type", "from", u1.username AS "fromName", "to", u2.username AS "toName",
	extra1, ARRAY(SELECT items.name FROM items JOIN requests AS r1 ON items.id = ANY(r1.extra1) WHERE r1.id = requests.id) AS items1,
	extra2, ARRAY(SELECT items.name FROM items JOIN requests AS r1 ON items.id = ANY(r1.extra2) WHERE r1.id = requests.id) AS items2,
	"extraInt", u3.username AS "mmName", extrastring
 	FROM requests
	JOIN users AS u1 ON requests.from = u1.userid
	JOIN users AS u2 ON requests.to = u2.userid
	LEFT JOIN users AS u3 ON requests."extraInt" = u3.userid;