如何通过SQL-Server中的经理和主管获取员工 [英] How to get employees by manager and supervisor in SQL-Server

问题描述

Please help me to get employees based on manager and supervisor in SQL Server 2014.
Please find the below table.

EmpID	EmpName	       SuperviserName	   SuperviserID
111	    Employee       Superviser 	       115
115	    Superviser     Manager	           116
116	    Manager	       VP	               117
117	    VP	           CEO	               222

If i pass parameter as '115' i need output in this way:

EmpID	EmpName	       SuperviserName	   SuperviserID
111	    Employee       Superviser 	       115

If i pass parameter as '116' i need output in this way:

EmpID	EmpName	       SuperviserName	   SuperviserID
111	    Employee       Superviser 	       115
115	    Superviser     Manager	           116


If i pass parameter as '222' i need output in this way:

EmpID	EmpName	       SuperviserName	   SuperviserID
111	    Employee       Superviser 	       115
115	    Superviser     Manager	           116
116	    Manager	       VP	               117
117	    VP	           CEO	               222

推荐答案

-- Declare variable for SuperViserID
DECLARE @TempSuperviserID INT; 
SET @TempSuperviserID = 222;

-- Recursive CTE
WITH AllEmployee AS 
(  
SELECT EmpID, EmpName, SuperviserName, SuperviserID
FROM Employee
WHERE SuperviserID  = @TempSuperviserID
UNION ALL
SELECT e.EmpID, e.EmpName, e.SuperviserName, e.SuperviserID
FROM Employee e
INNER JOIN AllEmployee ecte ON ecte.EmpID = e.SuperviserID
)
-- Fetching all records from CTE
SELECT * from AllEmployee     

为了获得不同类型的输出，您需要更改在顶部声明的 @TempSuperviserID 值。

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