Question

我有这个查询，我想在avg上使用desc命令：

select Nomcircuit, avg(Monuments.NBETOILE) as TotalEtoiles from Circuits      
inner join CircuitsMonuments on Circuits.Idcircuit = CircuitsMonuments.Idcircuit
inner join Monuments on Monuments.Idmonument = CircuitsMonuments.Idmonument
group by Nomcircuit;

我尝试了几件事，但它似乎没有效果。

Answer 1

按照你的建议做：

SELECT Nomcircuit,
       AVG(Monuments.NBETOILE) AS TotalEtoiles
FROM Circuits      
INNER JOIN CircuitsMonuments
    ON Circuits.Idcircuit = CircuitsMonuments.Idcircuit
INNER JOIN Monuments
    ON Monuments.Idmonument = CircuitsMonuments.Idmonument
GROUP BY Nomcircuit
ORDER BY TotalEtoiles DESC

MySQL - 在Group by上使用desc

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