SUM然后，您需要
ORDER BY以下摘要值：
SELECt TOP 3 ProductID, SUM(Quantity) as qSumFROM TableGROUP BY ProductIDORDER BY qSum DESC
SUM然后，您需要
ORDER BY以下摘要值：
SELECt TOP 3 ProductID, SUM(Quantity) as qSumFROM TableGROUP BY ProductIDORDER BY qSum DESC
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