Question

How would I join Table 1 and 2 together?

Table 1:

SELECT Roomid, Room, Latitude, Longitude,
                ACOS(SIN((:lat))*SIN(RADIANS(Latitude)) + COS((:lat))*COS(RADIANS(Latitude))*COS(RADIANS(Longitude)-(:lon)))*(:R) AS D
FROM Rooms
AS t1
WHERE Latitude>(:minLat) AND Latitude<(:maxLat)
                AND Longitude>(:minLon) AND Longitude<(:maxLon)
                AND ACOS(SIN((:lat))*SIN(RADIANS(Latitude)) + COS((:lat))*COS(RADIANS(Latitude))*COS(RADIANS(Longitude)-(:lon)))*(:R) < (:rad)
ORDER BY D
limit 6

Table 2:

SELECT name, date, roomid, descr
FROM Events
AS t2   
WHERE date > NOW()
GROUP BY roomid
ORDER BY date

Whenever I try to perform a JOIN on t1.Roomid = t2.roomid it does not work.

Answer 1

SELECT * FROM
(
SELECT Roomid, Room, Latitude, Longitude,
                ACOS(SIN((:lat))*SIN(RADIANS(Latitude)) + COS((:lat))*COS(RADIANS(Latitude))*COS(RADIANS(Longitude)-(:lon)))*(:R) AS D
FROM Rooms
AS t1
WHERE Latitude>(:minLat) AND Latitude<(:maxLat)
                AND Longitude>(:minLon) AND Longitude<(:maxLon)
                AND ACOS(SIN((:lat))*SIN(RADIANS(Latitude)) + COS((:lat))*COS(RADIANS(Latitude))*COS(RADIANS(Longitude)-(:lon)))*(:R) < (:rad)
ORDER BY D
limit 6
) A,
(
SELECT name, date, roomid, descr
FROM Events
AS t2   
WHERE date > NOW()
GROUP BY roomid
ORDER BY date
) B
WHERE A.Roomid = B.roomid;