CollectionFind::groupBy
(No version information available, might only be in Git)
CollectionFind::groupBy — Set grouping criteria
Descrizione
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.
Elenco dei parametri
-
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 arguments, one for each column.
Valori restituiti
A CollectionFind object that can be used for further processing.
Esempi
Example #1 mysql_xdevapi\CollectionFind::groupBy() example
<?php
// Assuming $coll is a valid Collection object
// Extract all the documents from the Collection and group the results by the 'name' field
$res = $coll->find()->groupBy('name')->execute();
?>
add a note
User Contributed Notes
There are no user contributed notes for this page.
