Sql按两个字段分组

我有两个表

客户

和

客户状态入口

：

CustomerStatusEntries
---------------------------
Id | Branch | CustomerStatus_Value | Customer_Id

CustomerStatus_Value  = ("B" = "Block" , "E" = "Created" etc...)

我需要得到这个输出

SELECT Branch AS 'Branch Code',
    SUM(CASE WHEN CustomerStatus_Value = 'E' THEN 1 ELSE 0 END) AS 'Created',
    SUM(CASE WHEN CustomerStatus_Value = 'A' THEN 1 ELSE 0 END) AS 'Active',
    SUM(CASE WHEN CustomerStatus_Value = 'B' THEN 1 ELSE 0 END) AS 'Blocked',
    SUM(CASE WHEN CustomerStatus_Value = 'C' THEN 1 ELSE 0 END) AS 'Cancelled',
    COUNT(CustomerStatus_Value) AS 'All'
FROM CustomerStatusEntries
GROUP BY Id

---

假设示例中显示的列数固定，可以执行以下操作：

SELECT Branch, 
       SUM(CASE WHEN CustomerStatus_Value = 'E' THEN 1 ELSE 0 END) AS Created,
       SUM(CASE WHEN CustomerStatus_Value = 'A' THEN 1 ELSE 0 END) AS Active,
       SUM(CASE WHEN CustomerStatus_Value = 'B' THEN 1 ELSE 0 END) AS Blocked,
       SUM(CASE WHEN CustomerStatus_Value = 'C' THEN 1 ELSE 0 END) AS Cancelled,
       COUNT(*) AS All
    FROM CustomerStatusEntries
    GROUP BY Branch;

---

假设示例中显示的列数是固定的，则可以执行以下操作：

SELECT Branch, 
       SUM(CASE WHEN CustomerStatus_Value = 'E' THEN 1 ELSE 0 END) AS Created,
       SUM(CASE WHEN CustomerStatus_Value = 'A' THEN 1 ELSE 0 END) AS Active,
       SUM(CASE WHEN CustomerStatus_Value = 'B' THEN 1 ELSE 0 END) AS Blocked,
       SUM(CASE WHEN CustomerStatus_Value = 'C' THEN 1 ELSE 0 END) AS Cancelled,
       COUNT(*) AS All
    FROM CustomerStatusEntries
    GROUP BY Branch;

---

您可以使用标准SQL执行此操作：

select branch_code,
       sum(case when CustomerStatus_Value = 'E' then 1 else 0 end) as Created,
       sum(case when CustomerStatus_Value = 'B' then 1 else 0 end) as Blocked,
       ...
from t
group by branch_code
order by 1

---

您可以使用标准SQL执行此操作：

select branch_code,
       sum(case when CustomerStatus_Value = 'E' then 1 else 0 end) as Created,
       sum(case when CustomerStatus_Value = 'B' then 1 else 0 end) as Blocked,
       ...
from t
group by branch_code
order by 1

---

什么是RDBMS？请发布表格结构和示例数据，这将有助于获得一些答案，而不是你需要的大量-1。如果你透露你使用的是哪种SQL，有人可能会告诉你如何使用。或者你可以使用SQL Server搜索。我已说明用户需要帮助我的字段。。。我认为可以很容易地得出这样的结论：customer表有一个id，它是主键，是RDBMS吗？请发布表格结构和示例数据，这将有助于获得一些答案，而不是你需要的大量-1。如果你透露你使用的是哪种SQL，有人可能会告诉你如何使用。或者你可以使用SQL Server搜索。我已说明用户需要帮助我的字段。。。我认为可以很容易地得出这样的结论：customer表有一个id，它是主键…+1，但仍然缺少

Total

行，而且似乎

id

不存在，

Branch

别名是

Branch code

+1，但仍然缺少

Total

行，此外，还可以看到

Id

不存在，而

分支机构

别名为

分支机构代码

。