Question

When I select data from a MySQL table and order it by a DECIMAL column DESCENDING, this is the order:

3, 2, 1, -1, 0

Why is this so?

How to correctly set the order so that it is:

3, 2, 1, 0, -1 ?

EDIT
Actually, the problem is with NULL data. This is the order it does:

3, 2, 1, -1, NULL, NULL

This is the desired order:

3, 2, 1, NULL, NULL, -1

Answer 1

use COALESCE in your ORDER BY clause

SELECT *
FROM tableName
ORDER BY COALESCE(columnName, 0) DESC

• SQLFiddle Demo