SQL - Displaying entries that are the max of a count?

Question

CREATE TABLE doctor( patient CHAR(13), docname CHAR(30) );

Say I had a table like this, then how would I display the names of the doctors that have

Answer 1

Here's another alternative that only has one subquery instead of two:

SELECT docname
FROM author
GROUP BY name
HAVING COUNT(*) = (
    SELECT COUNT(*) AS c
    FROM author
    GROUP BY name
    ORDER BY c DESC
    LIMIT 1
)