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Collection::remove — Remove collection documents
Remove collections that meet specific search conditions. Multiple operations are allowed, and parameter binding is supported.
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"]'
.
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.
Example #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();?>