MySQL - Number format - Separated with Comma
+----------------------------------+
| format(123456789.26, 2, 'ta_in') |
+----------------------------------+
| 12,34,56,789.26                  |
+----------------------------------+


http://dev.mysql.com/doc/refman/5.6/en/string-functions.html#function_format
http://dev.mysql.com/doc/refman/5.6/en/locale-support.html -- locales