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CollectionModify::limit

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CollectionModify::limitLimit number of modified documents

Descrição

public mysql_xdevapi\CollectionModify::limit ( integer $rows ) : mysql_xdevapi\CollectionModify

Limit the number of documents modified by this operation. Optionally combine with skip() to define an offset value.

Parâmetros

rows

The maximum number of documents to modify.

Valor Retornado

A CollectionModify object.

Exemplos

Exemplo #1 mysql_xdevapi\CollectionModify::limit() example

<?php
$session 
mysql_xdevapi\getSession("mysqlx://user:password@localhost");
$session->sql("DROP DATABASE IF EXISTS addressbook")->execute();
$session->sql("CREATE DATABASE addressbook")->execute();

$schema     $session->getSchema("addressbook");
$collection $schema->createCollection("people");

$collection->add('{"name": "Fred",  "age": 21, "job": "Construction"}')->execute();
$collection->add('{"name": "Wilma", "age": 23, "job": "Teacher"}')->execute();
$collection->add('{"name": "Betty", "age": 24, "job": "Teacher"}')->execute();

$collection
  
->modify("job = :job")
  ->
bind(['job' => 'Teacher'])
  ->
set('job''Principal')
  ->
limit(1)
  ->
execute();

$result $collection
  
->find()
  ->
execute();

print_r($result->fetchAll());
?>

O exemplo acima irá imprimir algo similar à:

Array
(
    [0] => Array
        (
            [_id] => 00005b6b53610000000000000118
            [age] => 21
            [job] => Construction
            [name] => Fred
        )
    [1] => Array
        (
            [_id] => 00005b6b53610000000000000119
            [age] => 23
            [job] => Principal
            [name] => Wilma
        )
    [2] => Array
        (
            [_id] => 00005b6b5361000000000000011a
            [age] => 24
            [job] => Teacher
            [name] => Betty
        )
)
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