public function execute($sql, $params = null)
$sql = 'DELETE FROM sns_topic_channel WHERE channel_id = 100';
$this->execute($sql);
$sql = 'DELETE FROM __TABLE__ WHERE channel_id = 100';
$this->execute($sql);
sql = 'DELETE FROM __TABLE__ WHERE type = ? AND status = ?';
$params = array(2, -1);
$this->execute($sql, $params);