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CollectionFind::groupBy

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CollectionFind::groupBySet grouping criteria

Açıklama

public mysql_xdevapi\CollectionFind::groupBy(string $sort_expr): mysql_xdevapi\CollectionFind

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.

Bağımsız Değişkenler

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.

Dönen Değerler

A CollectionFind object that can be used for further processing.

Örnekler

Örnek 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();

?>
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