UNION e ORDER BY problema in MySQL

Prova:

$getquery = "(SELECT * 
FROM highscore 
WHERE score >= '$score'
ORDER BY score ASC
LIMIT 6)

UNION ALL -- guaranteed to be beneficial in this case as Johan commented

(SELECT * 
FROM highscore 
WHERE score < '$score'
ORDER BY score DESC
LIMIT 5)";

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Oppure consultare il manuale di multa .