Sql 按列值分组，将两个字段相加得到差值

我有一个表格，格式如下图所示，作为数据库表格。

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我想从这个表中生成一个报告。给出了期望的格式。请帮助我完成查询。

假设在

T-SQL

中的表中只能有两种类型，您可以将查询编写为：

select PaymentType,
[Exists only in old],
diff,
[Exists only in New],
([Exists only in old]+diff+[Exists only in New]) as Total
from
(
-- Fetch Data for Type 1
select 'Type1' as PaymentType,
       sum( case when EXIST_IN_New = 'Not Exists' and EXIST_IN_Old='Exists' 
            then Old_Type_1
            else 0 end) as 'Exists only in old',
       sum( case when EXIST_IN_New = 'Exists' and EXIST_IN_Old='Not Exists' 
            then New_Type_1
            else 0 end) as 'Exists only in New',
       sum( case when EXIST_IN_New = 'Exists' and EXIST_IN_Old='Exists' 
            then Old_Type_1
            else 0 end) - 
         sum( case when EXIST_IN_New = 'Exists' and EXIST_IN_Old='Exists' 
            then New_Type_1
            else 0 end)   as diff                  
from 
Test
union
-- Fetch Data for Type 2
select 'Type2' as PaymentType,
       sum( case when EXIST_IN_New = 'Not Exists' and EXIST_IN_Old='Exists' 
            then Old_Type_2
            else 0 end) ,
       sum( case when EXIST_IN_New = 'Exists' and EXIST_IN_Old='Not Exists' 
            then New_Type_2
            else 0 end) ,
       sum( case when EXIST_IN_New = 'Exists' and EXIST_IN_Old='Exists' 
            then Old_Type_2
            else 0 end) - 
         sum( case when EXIST_IN_New = 'Exists' and EXIST_IN_Old='Exists' 
            then New_Type_2
            else 0 end)                   
from 
Test
)as T

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我猜你应该展示你已经尝试过的内容，否则会有反对票，但是你想要的内容的描述很好。哪个数据库是MYSQL/SQL Server/Oracle？只能有2种类型和给定格式的数据吗？提示：在Oracle中，你可以通过4个子选择进行双选择，每种类型一次，然后进行联合。。。很简单，但可能不是最好的方法。@maraca：我的查询有点长，需要替换文件名，因为它们很敏感。但很快就会更改列名并发布查询。受您的查询启发。是类型是固定的否。我正在以ur格式更改我的查询。将很快更新。