Finding the column with highest value within one row

Question

This is how the table looks like

Jan | Feb | Mar | ~
10  | 20  | 10  | ~

I can find the highest value using GREATEST function.

SELECT GREATEST(Jan,Feb,Mar,~) FROM table

Now, I want to find the month with the highest value. I can try to compare the result of GREATEST function with individual column values. However, I feel that there should be a more elegant and easy to read solution.

Answer 1

Here's another way that works for me:

SELECT month FROM t1
WHERE num =
(
  SELECT MAX(num)FROM t1
);

http://sqlfiddle.com/#!6/87ffd/12/0