Collection::remove
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Collection::remove — Remove collection documents
Beschreibung
Remove collections that meet specific search conditions. Multiple operations are allowed, and parameter binding is supported.
Parameter-Liste
-
search_condition -
Must be a valid SQL expression used to match the documents to modify. This expression might be as simple as
true, which matches all documents, or it might use functions and operators such as'CAST(_id AS SIGNED) >= 10','age MOD 2 = 0 OR age MOD 3 = 0', or'_id IN ["2","5","7","10"]'.
Rückgabewerte
If the operation is not executed, then the function will return a Remove object that can be used to add additional remove operations.
If the remove operation is executed, then the returned object will contain the result of the operation.
Beispiele
Beispiel #1 mysql_xdevapi\Collection::remove() 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": "Alfred", "age": 18, "job": "Butler"}')->execute();
$collection->add('{"name": "Bob", "age": 19, "job": "Painter"}')->execute();
// Remove all painters
$collection
->remove("job in ('Painter')")
->execute();
// Remove the oldest butler
$collection
->remove("job in ('Butler')")
->sort('age desc')
->limit(1)
->execute();
// Remove record with lowest age
$collection
->remove('true')
->sort('age desc')
->limit(1)
->execute();
?>
