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CollectionFind::groupBy

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CollectionFind::groupBy — Set grouping criteria

Description

Parameters

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.

Return Values

A CollectionFind object that can be used for further processing.

Examples

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=res = res=coll->find()->groupBy('name')->execute();?>`