sql - 使用 TSQL JOIN 返回正确的记录

Question

我有声明 A 和声明 B。

语句 A 返回 5 条记录，语句 B 返回 1 条记录。

声明 A

    SELECT DISTINCT    
    Outlet.cCode,
    Employee.cEmployeeNumber,
    FROM  Outlet 
    INNER JOIN Employee ON EmployeeOutlet.iEmployee = Employee.iID 
    WHERE cCOde = 123

声明 B

 Select OutletCode, RSMcode, ASMcode, FMcode from Employee_Hierarchy
 Where OutletCode = 123

现在只需要返回 Statement A 中的 3 条记录，其中 Employee.cEmployeeNumber 等于 RSMcode、ASMcode 或 FMcode……

现在，如果我在其中添加以下 JOIN 只会返回 1 条记录，我该如何满足仍然需要的其他 2 条记录？

 SELECT DISTINCT    
        Outlet.cCode,
        Employee.cEmployeeNumber,
        FROM  Outlet 
        INNER JOIN Employee ON EmployeeOutlet.iEmployee = Employee.iID 
        INNER JOIN Employee_Hierarchy as EH ON EH.RSMcode = Employee.cEmployeeNumber and EH.OutletCode = Outlet.cCode
        WHERE Outlet.cCode = 123

当我为每个 RSMcode 和 ASMcode 和 FMcode 添加一个 JOIN 时，它什么也不返回.....

Answer 1

这个怎么样？

SELECT DISTINCT    
    Outlet.cCode,
    Employee.cEmployeeNumber,
    FROM  Outlet 
    INNER JOIN Employee ON EmployeeOutlet.iEmployee = Employee.iID 
    INNER JOIN Employee_Hierarchy as EH ON EH.OutletCode = Outlet.cCode AND (EH.RSMcode = Employee.cEmployeeNumber OR EH.ASMcode = Employee.cEmployeeNumber OR EH.FMcode = Employee.cEmployeeNumber)
WHERE Outlet.cCode = 123

Answer 2

INNER JOIN Employee_Hierarchy as EH ON EH.RSMcode = Employee.cEmployeeNumber and outletCode = Outlet.cCode

将这段代码更改为

INNER JOIN Employee_Hierarchy as EH ON EH.OutletCode = Outlet.cCode 
WHERE 
Employee.cEmployeeNumber=EH.RSMcode OR 
Employee.cEmployeeNumber=EH.ASMcode OR
Employee.cEmployeeNumber=EH.FMcode 

Answer 3

只是一个猜测

SELECT DISTINCT    
        Outlet.cCode,
        Employee.cEmployeeNumber,
        FROM  Outlet 
        INNER JOIN Employee ON EmployeeOutlet.iEmployee = Employee.iID 
        INNER JOIN Employee_Hierarchy as EH ON EH.RSMcode = Employee.cEmployeeNumber and EH.OutletCode = Outlet.cCode
        and EH.OutletCode = 123