Substract result from two querys

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I have two querys that i need to substract, i the first query i get the results like this :

SQL

ROOMS | ROOM_Type
    3 | JRS
    7 | HPT

And the Second one returns

SQL

ROOMS | ROOM_Type
    13 | JRS
    11 | HPT

i need to get 1 result in wich both querys substract each other making a total count like this:

SQL

ROOMS | ROOM_Type
   10 | JRS
    4 | HPT

What I have tried:

I have tryed EXCEPT method and (Select(...) - Select (...) with no results i dont know how to make them substract their first result's
This are my 2 query's

Query 1

SQL

<pre>SELECT SUM(ROOMS), [ROOMS_Type] FROM   
  [RESERVATION]
WHERE  (SALIDA > N'2016-10-03') AND (ESTATUS = N'RV') AND (LLEGADA <= N'2016-10-03')
GROUP BY [ROOMS_Type]
ORDER BY ROOMS_Type

Query 2:

SQL

<pre>SELECT SUM(ROOMS) , [ROOMS_Type] 
FROM     [CHECKINS]
WHERE  (SALIDA > N'2016-10-03') AND (ESTATUS = N'IN')
GROUP BY [ROOMS_Type]

Posted 7-Mar-17 11:30am

Member 12839758

Updated 7-Mar-17 11:42am

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Bryian Tan · Answer 1 · 2017-03-07T11:42:00

Updated to use CTE. Wrap both the queries in Common Table Expression.

~~This should do it. I saw the Query1 and 2 late, but the concept still the same, In your case, assume RESERVATION = #test1, CHECKINS=#test2~~

SQL

WITH cteReservation AS (SELECT SUM(ROOMS) ROOMS, [ROOMS_Type] FROM   
  [RESERVATION]
WHERE  (SALIDA > N'2016-10-03') AND (ESTATUS = N'RV') AND (LEGADA <= N'2016-10-03')
GROUP BY [ROOMS_Type]
--ORDER BY ROOMS_Type
), cteCheckins AS (
SELECT SUM(ROOMS) Rooms, [ROOMS_Type] 
FROM     [CHECKINS]
WHERE  (SALIDA > N'2016-10-03') AND (ESTATUS = N'IN')
GROUP BY [ROOMS_Type] )

SELECT t2.ROOMS - t1.ROOMS 'ROOMS', t1.[ROOMS_Type]   FROM 
cteCheckins t2 JOIN cteReservation t1
ON t2.[ROOMS_Type] = t1.[ROOMS_Type]
ORDER BY t1.[ROOMS_Type] DESC

Output:

ROOMS	ROOMS_Type
  10	JRS
   4	HPT