从一列生成MIN，AVG，MAX列。 [SQL]配置单元

Question

我有一个带有油价列的数据库。我的目标是根据按位置分组的“油价”列，生成一个包含显示“最小价格”，“平均价格”和“最大价格”的列的表。其中oil.frequency ='A'

这是我当前的查询

select location, 
       min(oil.value) over (partition BY oil.location), 
       max(oil.value) over (partition BY oil.location), 
       avg(oil.value) over (partition BY oil.location)
FROM OIL 
Where oil.frequency = 'A'
GROUP BY oil.location, oil.value;

下面的图像显示了我的数据表，第二个图像显示了我希望数据如何显示。

enter image description here

enter image description here

Answer 1

您不需要窗口功能。只需按位置分组并汇总：

select location, 
       min(value), 
       max(value), 
       avg(value)
FROM OIL 
Where frequency = 'A'
GROUP BY location;