XDB::execute('UPDATE requests SET data={?}, stamp=stamp
WHERE user_id={?} AND type={?} AND stamp={?}',
$this, $this->uid, $this->type, $this->stamp);
XDB::execute('UPDATE requests SET data={?}, stamp=stamp
WHERE user_id={?} AND type={?} AND stamp={?}',
$this, $this->uid, $this->type, $this->stamp);