Converting Resultset Into User Defined Name using select query in sql

Converting Resultset Into User Defined Name using select query in sql
example

SELECT date_format( doj, '%d/%m/%Y' ) AS week ,COUNT(user_id) FROm user_tb 
WHERE doj between '2012-01-01' AND '2012-01-31' group BY WEEK(doj)

Outlput will be like this

Result

week    COUNT(user_id)
06/01/2012  3
17/01/2012  2
25/01/2012  3
29/01/2012  1