Google表格查询 - ColX总和取决于ColY

Question

所以我有以下数据：

|Country    | Shop    | Qty |
-----------------------------
|Austrailia | Shop 1  | 3
|Austrailia | Shop 2  |
|Austrailia | Shop 3  | 
|Austrailia | Shop 4  | 
|Japan      | Shop 5  | 10
|Japan      | Shop 6  | 1
|Japan      | Shop 7  | 
|Japan      | Shop 8  | 
|Japan      | Shop 9  | 
|Japan      | Shop 10 | 
|Austria    | Shop 11 |
|Belgium    | Shop 12 | 
|Belgium    | Shop 13 | 
|Belgium    | Shop 14 | 45
|Belgium    | Shop 15 | 
|Belgium    | Shop 16 | 
|Belgium    | Shop 17 | 
|Belgium    | Shop 18 | 
|Denmark    | Shop 19 |     
|Finland    | Shop 20 | 2

我想在另一个标签中创建另一个表来查询此表，并为每个国家/地区提供不同商店数量行的总和。因此，例如，它将输出以下内容：

|Country    | Qty
-----------------
|Austrailia | 3
|Japan      | 11
|Austria    | 0
|Belgium    | 45
|Denmark    | 0 
|Finland    | 2

我一直在玩QUERY命令，但无法输出我需要的东西：（

Answer 1

=QUERY(A1:C21,"Select A,sum(C) group by A",1)