[英]Generating MIN, AVG, MAX columns from a column. [SQL] Hive
我有一個包含油價列的數據庫。 我的目標是根據按位置分組的石油價值列生成一個表格,其中包含顯示最低價格、平均價格和最高價格的列。 其中 oil.frequency = 'A'
這是我當前的查詢
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;
下圖顯示了我的數據表,第二張圖顯示了我希望數據如何顯示。
你不需要窗口函數。
只需按位置分組並匯總:
select location,
min(value),
max(value),
avg(value)
FROM OIL
Where frequency = 'A'
GROUP BY location;
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