EMP_cte used in procedure: dbo.uspGetEmployeeManagers

CREATE PROCEDURE [dbo].[uspGetEmployeeManagers]
@EmployeeID [int]
AS
BEGIN
SET NOCOUNT ON;

-- Use recursive query to list out all Employees required for a particular Manager
WITH [EMP_cte]([EmployeeID], [ManagerID], [FirstName], [LastName], [Title], [RecursionLevel]) -- CTE name and columns
AS (
SELECT e.[EmployeeID], e.[ManagerID], c.[FirstName], c.[LastName], e.[Title], 0 -- Get the initial Employee
FROM [HumanResources].[Employee] e
INNER JOIN [Person].[Contact] c
ON e.[ContactID] = c.[ContactID]
WHERE e.[EmployeeID] = @EmployeeID
UNION ALL
SELECT e.[EmployeeID], e.[ManagerID], c.[FirstName], c.[LastName], e.[Title], [RecursionLevel] + 1 -- Join recursive member to anchor
FROM [HumanResources].[Employee] e
INNER JOIN [EMP_cte]
ON e.[EmployeeID] = [EMP_cte].[ManagerID]
INNER JOIN [Person].[Contact] c
ON e.[ContactID] = c.[ContactID]
)
-- Join back to Employee to return the manager name
SELECT [EMP_cte].[RecursionLevel], [EMP_cte].[EmployeeID], [EMP_cte].[FirstName], [EMP_cte].[LastName],
[EMP_cte].[ManagerID], c.[FirstName] AS 'ManagerFirstName', c.[LastName] AS 'ManagerLastName' -- Outer select from the CTE
FROM [EMP_cte]
INNER JOIN [HumanResources].[Employee] e
ON [EMP_cte].[ManagerID] = e.[EmployeeID]
INNER JOIN [Person].[Contact] c
ON e.[ContactID] = c.[ContactID]
ORDER BY [RecursionLevel], [ManagerID], [EmployeeID]
OPTION (MAXRECURSION 25)
END;

Document was prepared on: Thursday, April 05, 2007