SQL - Tools(ORDER BY)

ORDER BY keyword is used for sorting suppose in a table there is a column named first_name.
If you want to show the result in ascending order then :-

SELECT * FROM Persons WHERE Age >= 25 GROUP BY first_name ASC

If you want to show the result in descending order then :-
SELECT * FROM Persons WHERE Age >= 25 GROUP BY first_name DESC

By default it is ascendeng . if we use like GROUP BY first_name then it sorts in ascending order.