I created a scalar user defined function that will accept a date of birth and return the age a person will be in 15 years from now.

```
CREATE FUNCTION AgeIn15 (@DateOfBirth DATE)
RETURNS INT
AS
BEGIN
    RETURN Convert(INT, DateAdd(year, 15, DateDiff(year, @DateOfBirth, GetDate())))
END

```

Now I want to Use the UDF created to show the age of all persons in my table marketing\_list along with their original information. How do I do this? I tried this but I got an error

```
SELECT *
FROM marketing_list AgeIn15(marketing_list.DateOfBirth)

SELECT *
    ,AgeIn15(marketing_list.Date_of_Birth)
FROM marketing_list
WHERE AgeIn15(Date_of_Birth) > 45

```