Използвайте AS
за да даде псевдоним на колона.
SELECT EmployeeID,
[DD14C4C2-FC9E-4A2E-9B96-C6A20A169B2E] AS Name,
[BE8149E2-0806-4D59-8482-58223C2F1735] AS Age,
[23B2C459-3D30-41CA-92AE-7F581F2535D4] AS Salary
FROM EmployeeAttributes PIVOT ( MAX(VALUE) FOR AttributeID IN (
[DD14C4C2-FC9E-4A2E-9B96-C6A20A169B2E],
[BE8149E2-0806-4D59-8482-58223C2F1735],
[23B2C459-3D30-41CA-92AE-7F581F2535D4]) ) P