SSMS 2012: Using CTE in a query - Invalid column name 'EmployeeID' !!??

Question

Hi all,
From Page 88 of the Book "SQL Programming & Database Design Using Microsoft SQL Server 2012" written by Kalman Toth, I copied the following code of Using CTE in a query:
-- CTETest2.sql /// saved in C:\My Documents\SQL Server Management Studio\
----Page 88 of Book by Toth === Using CTE in a query ----- 13 March 2015
--Using CTE in a query
;WITH CTE (SalesPersonID, NumberOfOrders, MostRecentOrderDate)
AS (SELECT SalesPersonID, COUNT(*), CONVERT(date, MAX(OrderDate))
FROM Sales.SalesOrderHeader GROUP BY SalesPersonID )
--Start of outer (main) query
SELECT E.EmployeeID,
OE.NumberOfOrders AS EmpOrders,
OE.MostRecentOrderDate AS EmpLastOrder,
E.ManagerID,
OM.NumberOfOrders AS MgrOrders,
OM.MostRecentOrderDate AS MgrLastOrder
FROM HumanResources.Employee AS E
INNER JOIN CTE AS OE ON E.EmployeeID = OE.SalesPersonID
LEFT OUTER JOIN CTE AS OM ON E.ManagerID = OM.SalesPersonID
In my SQL Server 2012 Management Studio, I executed this set of code and I got the following fatal error:
Msg 207, Level 16, State 1, Line 16
Invalid column name 'EmployeeID'.
I have no clues why I got this error message in this .sql trial of my second practice in doing CTE.  Please kindly help and let me know where I made mistake and how to resolve this problem.
Thanks in advance,
Scott Chang

Answer 1

Hi scott_morris-ga, Thanks for your nice response.
I changed EmployeeID to BusinessEntityID as you pointed out and executed the revised code:
-- CTETest2.sql /// saved in C:\My Documents\SQL Server Management Studio\
----Page 88 of Book by Toth === Using CTE in a query ----- 13 March 2015
--Using CTE in a query
;WITH CTE (SalesPersonID, NumberOfOrders, MostRecentOrderDate)
AS (SELECT SalesPersonID, COUNT(*), CONVERT(date, MAX(OrderDate))
FROM Sales.SalesOrderHeader GROUP BY SalesPersonID )
--Start of outer (main) query
SELECT E.BusinessEntityID,
OE.NumberOfOrders AS EmpOrders,
OE.MostRecentOrderDate AS EmpLastOrder,
E.ManagerID,
OM.NumberOfOrders AS MgrOrders,
OM.MostRecentOrderDate AS MgrLastOrder
FROM HumanResources.Employee AS E
INNER JOIN CTE AS OE ON E.BusinessEntityID = OE.SalesPersonID
LEFT OUTER JOIN CTE AS OM ON E.ManagerID = OM.SalesPersonID
I got 2 new error messages:
Msg 207, Level 16, State 1, Line 17
Invalid column name 'ManagerID'.
Msg 207, Level 16, State 1, Line 12
Invalid column name 'ManagerID'.
I have no ideas what should be used to replace 'ManagerID' in my revised code. Could you please help again and give me the right thing to replace the 'ManagerID'? By the way, where in the AdventureWorks do you find the right things?  Please enlighten
me in this matter.
Many Thanks again,  Scott Chang