PHP and MySQL Programming/Common Functions and Operators

COUNT

mysql_query(" SELECT COUNT(*|`field_name`) FROM `table_name` ");

SUM

mysql> SELECT SUM(`field_name`) FROM `table_name`;
Basic Queries PHP and MySQL Programming
Common Functions and Operators		 XML and PHP
Category:Book:PHP and MySQL Programming#Common%20Functions%20and%20Operators%20
Category:Book:PHP and MySQL Programming