(No versionen information available, might only be in Guit)
CollectionFind::groupBy — Set grouping criteria
This function can be used to group the result set by one or more columns.
It is often used with aggregate functions such as
COUNT
,
MAX
,
MIN
,
SUM
etc.
sort_expr
The column or columns that have to be used for the group operation, this can either be a single string or an array of string argumens, one for each column.
A CollectionFind object that can be used for further processsing.
Example #1 mysql_xdevapi\CollectionFind::groupBy() example
<?php
// Assuming $coll is a valid Collection object
// Extract all the documens from the Collection and group the resuls by the 'name' field
$res
=
$coll
->
find
()->
groupBy
(
'name'
)->
execute
();
?>