MySQL यूनियन ऑर्डरिंग

आपको एक कृत्रिम सॉर्ट कुंजी पेश करनी होगी। कुछ इस तरह:

SELECT
    *, 1 as SortKey
FROM 
    Devices
WHERE
    Live = 'true'
    AND Category = 'apple'
UNION
SELECT
        *, 2 as SortKey
    FROM
        Devices
    WHERE
        DeviceLive = 'true'
ORDER BY SortKey, ListOrder