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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\mssql;
* This is an extension of the default PDO class of DBLIB drivers.
* It provides workarounds for improperly implemented functionalities of the DBLIB drivers.
*
* @author Bert Brunekreeft <[email protected]>
* @since 2.0
class DBLibPDO extends \PDO
{
* Returns value of the last inserted ID.
* @param string|null $sequence the sequence name. Defaults to null.
* @return int last inserted ID value.
public function lastInsertId($sequence = null)
return $this->query('SELECT CAST(COALESCE(SCOPE_IDENTITY(), @@IDENTITY) AS bigint)')->fetchColumn();
}
* Retrieve a database connection attribute.
* It is necessary to override PDO's method as some MSSQL PDO driver (e.g. dblib) does not
* support getting attributes.
* @param int $attribute One of the PDO::ATTR_* constants.
* @return mixed A successful call returns the value of the requested PDO attribute.
* An unsuccessful call returns null.
public function getAttribute($attribute)
try {
return parent::getAttribute($attribute);
} catch (\PDOException $e) {
switch ($attribute) {
case self::ATTR_SERVER_VERSION:
return $this->query("SELECT CAST(SERVERPROPERTY('productversion') AS VARCHAR)")->fetchColumn();
default:
throw $e;