Google bigquery 如何在Bigquery中的一个select语句中使用两个GROUPBY语句？

我有一张三列的桌子。A列、B列、C列

表中数据结构如下：

Column_A  |  Column_B  |  Column_C
----------------------------------
  Jeeva   |  football  |   1
  Jeeva   |  football  |   2
  Jeeva   |  football  |   3
  Jeeva   |  handball  |   5
  Jeeva   |  handball  |   1
  Jeeva   |  handball  |   7
  Jeeva   |  handball  |   2
  Jeeva   |  voleyball |   1
  Jeeva   |  voleyball |   2
 Bharathi |  voleyball |   10
 Bharathi |  voleyball |   7
 Bharathi |  voleyball |   2

因此，我希望：

Column_A  |  Column_B  |  Column_C
----------------------------------
  Jeeva   |  football  |   3
  Jeeva   |  handball  |   7
  Jeeva   |  voleyball |   2
 Bharathi |  voleyball |   10      

期望结果：在列_C中找到用户在列_A中玩过的列_B中的每个单项运动的最大得分值

我在Bigquery中编写了如下查询：

SELECT DISTINCT a.* FROM `project.dataset.individual_results` a 
RIGHT JOIN
(SELECT column_a, column_b, MAX(column_c) AS max_val FROM `project.dataset.individual_results` GROUP BY column_a GROUP BY column_b) b 
ON a.column_a = b.column_a AND a.column_b= b.max_val WHERE a.column_c IS NOT NULL

由于第二个Group By语句，我收到一个错误

错误消息：

Syntax error: Expected ")" but got keyword GROUP

如何解决此问题并获得所需的结果？

逐列分组a逐列分组b-应该是逐列分组a、列分组b

但我也认为您根本不需要JOIN，第二个子查询会给出您描述的确切结果：

SELECT column_a, column_b, MAX(column_c) AS max_val 
FROM `project.dataset.individual_results` 
GROUP BY column_a, column_b