Union query with left join : Group & Ordering Issues - sorting

Question

I have finally figured out how to perform a somewhat successful UNION query with left joins! Yeah (snaps for me)..
Now, the problem I'm running into is that I can get it to Group them so that I only have one entry for each code...
SELECT vg.*, lh.*
FROM tbl_vluchtgegevens vg
INNER JOIN tbl_luchthaven lh
ON lh.luchthavenID = vg.vertrekluchthaven
UNION
SELECT vg.*, lh.*
FROM tbl_vluchtgegevens vg
INNER JOIN tbl_luchthaven lh
ON lh.luchthavenID = vg.aankomstluchthaven
GROUP BY lh.luchthavencode;
I've tried grouping based on the luchthavencode, which is what i'm displaying. I've tired the luchthavenID...
Here is a sample of what I am trying to accomplish (note: I did not spend a lot of time reproducing the field names in my tables, I just used some shorthand, i will translate that later)
Here is an example of what I am trying to achieve. This board won't let me post until I have at least 10 reputation.
http://globe-trekking.com/union_query_example.jpg
kind of pulling my hairs out on this... though i'm sure it's simple?
Any help would be great!
Regards,

Answer 1

Try this and see if it fits for you
SELECT
Luchthaven.Luchthaven.luchthavencode as CODE,
Luchthaven.luchthavennaam as NAME
FROM
Luchthaven , Vluchtgegens
WHERE
Luchthaven.LID = Vluchtgegens.vertrek AND
Luchthaven.LID = Vluchtgegens.aankomst AND
ORDER BY Luchthaven.luchthavennaam DESC
GROUP BY Luchthaven.luchthavennaam

Answer 2

I was able to get it by using:
select *
from
(
SELECT vg.vertrekluchthaven AS code
FROM tbl_vluchtgegevens vg
WHERE vg.vertrekdatum <=NOW()
UNION
SELECT vg.aankomstluchthaven AS code
FROM tbl_vluchtgegevens vg
WHERE vg.vertrekdatum <=NOW()
) vg
INNER JOIN tbl_luchthaven lh
ON lh.luchthavenID = vg.code
Group by vg.code
Order by lh.luchthavencode;
Thanks for your help... sorry if my thought process was not very clear.