Phalcon事务和嵌套事务

📌 相关文章

📜 Phalcon事务和嵌套事务

📅 最后修改于: 2021-01-07 09:26:22 🧑 作者: Mango

Phalcon交易和嵌套交易

Phalcon支持事务处理，因为它与PDO关联。为了提高数据库的性能，我们可以执行数据操作。下面是应用事务的数据库结构：

交易示例：

begin();

    // Execute some SQL statements
    $connection->execute('DELETE 'company' WHERE 'id' = 101');
    $connection->execute('DELETE 'company' WHERE 'id' = 102');
    $connection->execute('DELETE 'company' WHERE 'id' = 103');

    // Commit if everything goes well
    $connection->commit();
} catch (Exception $e) {
    // An exception has occurred rollback the transaction
    $connection->rollback();
}

//数据库“公司”数据已删除。

嵌套交易示例：

begin();

    // Execute some SQL statements
    $connection->execute('DELETE 'company' WHERE 'id' = 101');

    try {
        // Start a nested transaction
        $connection->begin();

        // Execute these SQL statements into the nested transaction
        $connection->execute('DELETE 'company' WHERE 'id' = 102');
        $connection->execute('DELETE 'company' WHERE 'id' = 103');

        // Create a save point
        $connection->commit();
    } catch (Exception $e) {
        // An error has occurred, release the nested transaction
        $connection->rollback();
    }

    // Continue, executing more SQL statements
    $connection->execute('DELETE 'company' WHERE 'id' = 104');

    // Commit if everything goes well
    $connection->commit();
} catch (Exception $e) {
    // An exception has occurred rollback the transaction
    $connection->rollback();
}

//数据库“公司”数据已删除。

Event Name	Triggered	Break Operation
afterConnect	After a successfully connection to a database system	No
beforeQuery	Before send a SQL statement to the database system	Yes
afterQuery	After send a SQL statement to database system	No
beforeDisconnect	Before close a temporal database connection	No
beginTransaction	Before a transaction is going to be started	No
rollbackTransaction	Before a transaction is rollbacked	No
commitTransaction	Before a transaction is committed	No