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CollectionFind::fields — Set document field filter
Defines the columns for the query to return. If not defined, all columns are used.
projection
Can either be a single string or an array of strings identifying the columns to be returned for each document that match the search condition.
A CollectionFind object that can be used for further processing.
Example #1 mysql_xdevapi\CollectionFind::fields() 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 = $session->getSchema("addressbook");$create = $schema->createCollection("people");$create ->add('{"name": "Alfred", "age": 18, "job": "Butler"}') ->execute();// ...$collection = $schema->getCollection("people");$result = $collection ->find('job like :job and age > :age') ->bind(['job' => 'Butler', 'age' => 16]) ->fields('name') ->execute();var_dump($result->fetchAll());?>
The above example will output something similar to:
array(1) { [0]=> array(1) { ["name"]=> string(6) "Alfred" } }