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TableSelect::lockExclusive — Execute EXCLUSIVE LOCK
$lock_waiting_option = ?): mysql_xdevapi\TableSelectExecute a read operation with EXCLUSIVE LOCK. Only one lock can be active at a time.
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
TableSelect object.
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);
?>
以上例程的輸出類(lèi)似于：
Array
(
[0] => Array
(
[name] => John
[age] => 42
)
[1] => Array
(
[name] => Sam
[age] => 42
)
)