public function getServerVersion()
{
try {
$stmt = $this->query("SELECT CAST(SERVERPROPERTY('productversion') AS VARCHAR)");
$result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
if (count($result)) {
return $result[0][0];
}
return null;
} catch (PDOException $e) {
return null;
}
}