aggregation Directory Reference

Files
file	avg.php
	Column average aggregation type.
file	base.php
	Base class for column aggregation types.
file	count.php
	Column count aggregation type.
file	countdistinct.php
	Column count distinct aggregation type.
file	groupconcat.php
	Column group concatenation aggregation type.
file	groupconcatdistinct.php
	Column group concatenation distinct aggregation type.
file	max.php
	Column max aggregation type.
file	min.php
	Column min aggregation type.
file	percent.php
	Column percent aggregation type.
file	sum.php
	Column sum aggregation type.