Mostrar un campo de otra consulta

[Gabo77]

prueba con esto y me cuantas!

Código:

SELECT
	ol.MaeCod, SUM(ol.OrdCant) as OrdCant, SUM(ol.OrdCaEnt) as OrdCaEnt,
	CASE
		WHEN SUM(OL.ORDCANT) - SUM(OL.ORDENT) <> B.MAEPED THEN
			B.MAEPED
		ELSE
			/*VALOR POR DEFAULT*/
			NULL
	END AS RESULTADO
FROM
	RORDLIN OL
INNER JOIN
	RMAEBOD B
	ON
	B.CIACOD = OL.CIACOD
	AND
	B.MAECOD = OL.MAECOD
WHERE
	EXISTS(
		SELECT
			1
		FROM
			RORDCAB OC
		WHERE
			OC.ORDEST = 'A'
			AND
			OC.ORDFS = 'N'
			AND
			OC.CIACOD = OL.CIACOD
			AND
			OC.ORDID = OL.ORDID
			AND
			OC.ORDSEC = OL.ORDSEC
	)
	AND
	B.BDGID = 1

Saludos!