Question

我正在尝试让SQL将一些连续数据分组到两个存储桶中，但是这引发了“ GROUP BY子句中不允许使用聚合函数”错误。我该如何规避呢？

SELECT
(CASE WHEN AVG(amount) BETWEEN 0 AND 100000 THEN "Group 1"
WHEN AVG(amount) > 100000 THEN "Group 2" END) AS Bucket
, AVG(amount)
FROM DB
GROUP BY bucket

Answer 1

我相信这就是您要寻找的

SELECT
(CASE amount BETWEEN 0 AND 100000 THEN "Group 1"
WHEN amount > 100000 THEN "Group 2" END) AS Bucket
, AVG(amount)
FROM DB
GROUP BY bucket

Answer 2

尝试如下

SELECT
CASE when amount BETWEEN 0 AND 100000 THEN 'Group 1'
WHEN amount > 100000 THEN 'Group 2' END AS Bucket
, AVG(amount)
FROM DB
GROUP BY CASE when amount BETWEEN 0 AND 100000 THEN 'Group 1'
WHEN amount > 100000 THEN 'Group 2' END

Answer 3

由于只与AVG打交道，因此不需要分组。

SELECT
(CASE WHEN AVG(amount) BETWEEN 0 AND 100000 THEN "Group 1"
WHEN AVG(amount) > 100000 THEN "Group 2" END) AS Bucket
, AVG(amount)
FROM DB

将数据分组到存储桶中-SQL

3 个答案: