Submit a Pull Request Report a Bug

TableSelect::lockExclusive

(No version information available, might only be in Git)

TableSelect::lockExclusive — Execute EXCLUSIVE LOCK

说明

public mysql_xdevapi\TableSelect::lockExclusive(int $lock_waiting_option = ?): mysql_xdevapi\TableSelect

Execute a read operation with EXCLUSIVE LOCK. Only one lock can be active at a time.

参数

lock_waiting_option

The optional waiting option that defaults to MYSQLX_LOCK_DEFAULT. Valid values are:

MYSQLX_LOCK_DEFAULT
MYSQLX_LOCK_NOWAIT
MYSQLX_LOCK_SKIP_LOCKED

返回值

TableSelect object.

示例

示例 #1 mysql_xdevapi\TableSelect::lockExclusive() example

<?php
$session = mysql_xdevapi\getSession("mysqlx://user:password@localhost");

$schema = $session->getSchema("addressbook");
$table  = $schema->getTable("names");

$session->startTransaction();

$result = $table->select('name', 'age')
  ->lockExclusive(MYSQLX_LOCK_NOWAIT)
  ->execute();

$session->commit();

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

以上示例的输出类似于：

 
Array
(
    [0] => Array
        (
            [name] => John
            [age] => 42
        )
    [1] => Array
        (
            [name] => Sam
            [age] => 42
        )
)

＋add a note

User Contributed Notes

There are no user contributed notes for this page.