If you browse any table in a database then you have an option to sort by a particular column by clicking on the column name in table header but i was thinking of adding sort by multiple columns together.
Example: In the following link Click on Sort by "Gender" press Shift key(hold it down) and then press "Name".
http://web.iiit.ac.in/~ayush.datta/phptest/unit_testing/index.php
It groups and sorts by Gender then in Gender it sorts by Name.
Merged https://github.com/phpmyadmin/phpmyadmin/pull/1077