要细分的Sql查询

我在SQL Server中有以下表结构

交易：

 ---------------------------------------------------------------------
 **ID | FromEmployeeID | ToEmployeeID | OutgoingTotal | IncomingTotal**|
 ---------------------------------------------------------------------
   1  |      10        |     20       |       10      |       50
   2  |      11        |     10       |       20      |       40    

 ---------------------------------------------------------------------
 **ID | EmployeeID | outgoingcount| incomingcount | OutgoingTotal| IncomingTotal**|
 ---------------------------------------------------------------------
   1  |      10    |     1        |       1       |   10         |  50
   2  |      20    |     0        |       1       |   0          |  50
   3  |      11    |     1        |       0       |   0          |  40   

我需要通过

employeeID

将此数据转换到另一个表

Summary

，就好像从一名员工开始的事务转换为一名员工一样，我必须在摘要中登记为每个员工的两条记录（一条记录来自传出，一条记录来自传入）

摘要：

 ---------------------------------------------------------------------
 **ID | FromEmployeeID | ToEmployeeID | OutgoingTotal | IncomingTotal**|
 ---------------------------------------------------------------------
   1  |      10        |     20       |       10      |       50
   2  |      11        |     10       |       20      |       40    

 ---------------------------------------------------------------------
 **ID | EmployeeID | outgoingcount| incomingcount | OutgoingTotal| IncomingTotal**|
 ---------------------------------------------------------------------
   1  |      10    |     1        |       1       |   10         |  50
   2  |      20    |     0        |       1       |   0          |  50
   3  |      11    |     1        |       0       |   0          |  40   

我还有一个employee表，其中有employee id和employee的其他信息

---

如何做到这一点

我会使用一个临时表，首先插入员工ID，然后在单独的查询中更新计数和总和。尚未对此进行测试，但您可以尝试以下方法：

CREATE TABLE #Summary (
  ID INT IDENTITY(1,1) NOT NULL,
  EmployeeID INT NOT NULL,
  OutgoingCount INT NOT NULL,
  IncomingCount INT NOT NULL,
  OutgoingTotal INT NOT NULL,
  IncomingTotal INT NOT NULL
)

--Get all the distinct 'from' employee IDs
INSERT INTO #Summary( EmployeeID )
SELECT DISTINCT FromEmployeeID FROM Transaction;

--Get the rest of the employee ids, except for those that have already been added to the table
INSERT INTO #Summary( EmployeeID )
SELECT DISTINCT ToEmployeeID FROM Transaction t
LEFT JOIN #Summary s ON s.EmployeeID = t.ToEmployeeID
WHERE s.EmployeeID IS NULL

--Update the summary table with the outgoing results
UPDATE s
SET OutgoingCount = e.OutgoingCount,
    OutgoingTotal = e.OutgoingTotal
FROM
  #Summary s
  JOIN (SELECT FromEmployeeID AS EmployeeID, COUNT(OutgoingTotal) AS OutgoingCount, SUM(OutgoingTotal) AS OutgoingTotal FROM Transaction t WHERE t.FromEmployeeID = s.EmployeeID GROUP BY t.FromEmployeeID) e ON e.EmployeeID = s.EmployeeID

--Repeat the process for incoming results
UPDATE s
SET IncomingCount = e.IncomingCount,
    IncomingTotal = e.IncomingTotal
FROM
  #Summary s
  JOIN (SELECT ToEmployeeID AS EmployeeID, COUNT(IncomingTotal) AS IncomingCount, SUM(IncomingTotal) AS IncomingTotal FROM Transaction t WHERE t.ToEmployeeID = s.EmployeeID GROUP BY t.ToEmployeeID) e ON e.EmployeeID = s.EmployeeID

--End the end, select your results
SELECT
  *
FROM
  #Summary

---

正如@Nithin所说，在您的示例中，总数并不是总和

WITH AllEmployees AS (
    SELECT DISTINCT EmployeeId
    FROM [Transaction]
    CROSS APPLY (
        VALUES (FromEmployeeID)
              ,(ToEmployeeID)
    ) AS T(EmployeeId)
)
SELECT EmployeeId
      ,Outgoing.Records AS outgoingcount
      ,Incoming.Records AS incomingcount 
      ,COALESCE(Outgoing.Total, 0) AS OutgoingTotal
      ,COALESCE(Incoming.Total, 0) AS IncomingTotal
FROM AllEmployees
     CROSS APPLY (
          SELECT COUNT(1) AS Records
                ,SUM(OutgoingTotal) As Total
          FROM [Transaction]
          WHERE [Transaction].FromEmployeeID = AllEmployees.EmployeeId
     ) AS Outgoing
     CROSS APPLY (
          SELECT COUNT(1) AS Records
                ,SUM(IncomingTotal) AS Total
          FROM [Transaction]
          WHERE [Transaction].ToEmployeeID = AllEmployees.EmployeeId
     ) AS Incoming

---

根据我的理解，我写了一个问题：

SELECT ISNULL(OutGoing.FromEmployeeID,Incoming.ToEmployeeID) EmployeeID,
       ISNULL(OutgoingCount,0) OutgoingCount,
       ISNULL(IncomingCount,0) IncomingCount,
       ISNULL(OutgoingTotal,0) OutgoingTotal,
       ISNULL(IncomingTotal,0) IncomingTotal
FROM (
        SELECT FromEmployeeID,
               COUNT(*) OutgoingCount,
               SUM(OutgoingTotal) OutgoingTotal
        FROM CallLogs
        GROUP BY FromEmployeeID
      ) OutGoing
FULL OUTER JOIN 
      (
        SELECT ToEmployeeID,
               COUNT(*) IncomingCount ,
               SUM(IncomingTotal) IncomingTotal
        FROM CallLogs
        GROUP BY ToEmployeeID
      ) Incoming
ON OutGoing.FromEmployeeID = Incoming.ToEmployeeID

---

在两个表中合计支出总额和收入总额时存在一些不匹配。数据有效吗？据我所知，OutgoingTotal表示从雇员ID到雇员ID的呼叫（或任何事务），IncomingTotal表示从雇员ID到雇员ID的呼叫，对吗？