ALTER 表中存储的列名 function

Question

I'm working with the following function:

ALTER FUNCTION TestFunc (@year INT)
RETURNS @RetTable TABLE(
    Forename VARCHAR(32),
    Lastname VARCHAR(32),
    Course1 INT,
    Course2 INT,
    Course3 INT
)

In the body of the function I'm declaring various variables such as:

DECLARE @CourseOne VARCHAR(12);
DECLARE @CourseTwo VARCHAR(12);
DECLARE @CouseThree VARCHAR(12);

I then want to use these variables in order to apply another column name as following:

INSERT INTO @RetTable SELECT Forename, Lastname, C1 AS @CourseOne, C2 AS @CourseTwo, C3 AS @CourseThree FROM Teachers

The problem in this case is that the column name will still be " Course1, Course2, Course3 " even though I tried to "rename" the columns in the INSERT

Is there any way to make this work or is there any other way I could tackle this problem?

Answer 1

You cannot rename the columns in the table. Why do you want to rename columns in the middle of a function?

You could rename them when you call the function

SELECT Forename, Lastname, Course1 AS CourseOne, Course2 AS CourseTwo,Course3 AS Course3
FROM TestFunc(@year)

OR you could change your function declaration to have the tables named CourseOne, etc. at the start