How we can use CTE in subquery in sql server?

Question

How we can use CTE in subquery in sql server?

like ..

select id (i want to use CTE here), name from table_name

Answer 1

Create a view with CTE/ Multiple CTEs with UNION sets of all CTEs

CREATE VIEW [dbo].[_vEmployees] 
AS 
    WITH 
    TEST_CTE(EmployeeID, FirstName, LastName, City, Country)
        AS (
            SELECT EmployeeID, FirstName, LastName, City, Country FROM Employees WHERE EmployeeID = 4
        ), 
    TEST_CTE2
        AS (
            SELECT EmployeeID, FirstName, LastName, City, Country FROM Employees WHERE EmployeeID = 7
        )
    SELECT EmployeeID, FirstName, LastName, City, Country FROM TEST_CTE UNION SELECT * FROM TEST_CTE2
GO

Now, use it into sub query

SELECT * FROM Employees WHERE EmployeeID IN (SELECT EmployeeID FROM _vEmployees)