SELECT dun, COUNT( id_ahli ) AS JUMLAH_KESELURUHAN, COUNT(kaum='melayu') AS melayu, COUNT(kaum='cina') AS cina
FROM maklumat_ahli
WHERE jantina = 'lelaki'
AND
(kematian_tarikh IS NULL)
AND (bayaran_pertama IS NULL)
AND (bayaran_kedua IS NULL)
GROUP BY dun
ORDER BY dun

/-----------------------------------------/
|dun | Jumlah_keseluruhan | melayu | cina |
-------------------------------------------
|A   |123                 |100     |23    |
-------------------------------------------

COUNT(case when kaum='melayu' then 1 else 0 end) AS melayu,
COUNT(case when kaum='cina'the 1 else 0 end) AS cina