sql - 在选择中按错误分组

Question

我有个问题。

这是查询：

SELECT a.naam as "Artiest", SUM(o.numberOfOrders) as "Aantal singles",   
(SUM(o.numberOfOrders) * s.price) * 0.35 as "Winst  

FROM orders o
JOIN singles s ON s.singleid = b.singleid
JOIN artist a ON a.artistid = s.artistid
WHERE b.date= TO_DATE('15/MAY/2012','dd/mon/yyyy')
GROUP BY a.name

当我执行此查询时，我收到错误：

“不是 GROUP BY 表达式”

我已经尝试将(SUM(o.numberOfOrders) * s.price) * 0.35也放入 group by ，
但随后出现错误：

“这里不允许使用群组功能”

我该如何解决？

Answer 1

您想将其替换为以下内容之一：

sum(o.numberOfOrders*s.price)*0.35

或者：

sum(o.numberOfOrdrs)*avg(s.price)*0.35

或者可能）：

sum(o.numberOfOrdrs)*max(s.price)*0.35

换句话说，s.price 不在 group by

Answer 2

您缺少双引号。尝试这个：

SELECT 
    a.naam as "Artiest", 
    SUM(o.numberOfOrders) as "Aantal singles",   
    (SUM(o.numberOfOrders) * s.price) * 0.35 as "Winst"
FROM 
    orders o
        JOIN singles s ON s.singleid = b.singleid
        JOIN artist a ON a.artistid = s.artistid
WHERE 
    b.date= TO_DATE('15/MAY/2012','dd/mon/yyyy')
GROUP BY a.name