}
$sql = 'SELECT v.id AS vid, a.question_id AS qid, a.answer AS answer
FROM survey_votes AS v
- LEFT JOIN survey_answers AS a
- ON a.vote_id=v.id
+ INNER JOIN survey_answers AS a ON a.vote_id=v.id
WHERE v.survey_id={?}
- ORDER BY vid ASC, qid ASC, answer ASC;';
+ ORDER BY vid ASC, qid ASC, answer ASC';
$res = XDB::iterator($sql, $this->id); // retrieves all answers from database
$vid = -1;
$vid_ = 0;