FORMAT() funzione:http://dev. mysql.com/doc/refman/5.5/en/string-functions.html#function_format
SELECT CONCAT('$', FORMAT(val, 2)) ... ;
FORMAT() funzione:http://dev. mysql.com/doc/refman/5.5/en/string-functions.html#function_format
SELECT CONCAT('$', FORMAT(val, 2)) ... ;