如何在ms访问中使用DISTINCT？

How to use DISTINCT in ms access?

我有以下查询：

SELECT DISTINCT AwardDescriptions.aID, CostCentres.cCC 
FROM  AwardDescriptions 
INNER JOIN CostCentres ON AwardDescriptions.aID = CostCentres.cNumber 
ORDER BY CostCentres.cCC;

出于某种原因，当我运行我的查询时，它仍然显示所有重复值。有什么建议吗？

您可以使用 group by 并获取最小值或最大值：

SELECT MAX(AwardDescriptions.aID) as aID, CostCentres.cCC 
FROM  AwardDescriptions INNER JOIN
      CostCentres
      ON AwardDescriptions.aID = CostCentres.cNumber 
GROUP BY CostCentres.cCC
ORDER BY CostCentres.cCC;