SQL/mysql - Select distinct/UNIQUE but return all columns?

Question

SELECT DISTINCT field1, field2, field3, ......   FROM table

I am trying to accomplish the following sql statement but I want it to return all colum

Answer 1

SELECT *
FROM tblname
GROUP BY duplicate_values
ORDER BY ex.VISITED_ON DESC
LIMIT 0 , 30

in ORDER BY i have just put example here, you can also add ID field in this