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membres:
numero (Ö÷¼ü) 
name

Emprunts:
numero (Ö÷¼ü)
membre (Íâ¼ü¶ÔÓ¦membresµÄnumero)
creele (´´½¨Ê±¼ä)

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WITH TEMP AS 
(SELECT membre ,COUNT(*) AS CNT
from Emprunts
GROUP BY membre)
--ÏÈÈ¡×î¶àÈý¸ö
SELECT name 
from TEMP T,membres M
WHERE T.membre=M.numero
AND ROWNUM<=3
ORDER T.CNT ASC
UNION ALL
--ÏÈÈ¡×î¶àÈý¸ö
SELECT name 
from TEMP T,membres M
WHERE T.membre=M.numero
AND ROWNUM<=3
ORDER T.CNT DESC 



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