In the following select statement firstname and Middlename ALIAS does not appear. I want this column header to be in Uppercase.
SELECT dbo.Employee.Title AS SAL,
dbo.Employee.FirstName AS FIRSTNAME,
dbo.Employee.MiddleName AS MIDDLENAME
FROM dbo.Employee
I have tried it and it works fine for me. However, here is a suggested change to your SQL which may assist.
SELECT Title AS [SAL],
FirstName AS [FIRSTNAME],
MiddleName AS [MIDDLENAME]
FROM dbo.Employee