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