/**
* 直接SQL
*
* @param string $sql
* @param array $args
*
* @throws \PDOException
*
* @return Statement
*
* 例子
* ->query('SELECT id FROM table WHERE id = :id' ,array(':id'=>1))
* ->fetchAll();
*/
public function query($sql, array $args = array())
{
//清理上一个预处理对象
$this->stmt = null;
$this->expandArguments($sql, $args);
try {
//创建预处理对象
$this->stmt = $this->prepareQuery($sql);
//执行预处理语句
$this->stmt->execute($args);
} catch (\PDOException $e) {
//处理错误，并记录日志
$error = array('code' => $e->getCode(), 'prepareSQL' => $this->prepareSQL, 'sql' => $this->stmt->queryString, 'message' => $e->getMessage(), 'file' => $e->getFile(), 'line' => $e->getLine(), 'connectionName' => $this->name);
$args = $args ? $args : array();
$this->app->logger()->sql($error + $args);
throw $e;
}
return $this->stmt;
}
