Zend Framework Cardinality violation: 1241 Operand should contain 1 column(s)

Question

Hi guys, I have a sql problem and i don't know how to fix it, I have tried a few things but..you know.So here is my query:

    /**
 * Returns a list with all the months for the archive
 *
 * @return array
 */
public function Archive()
{
 $q = "SELECT DISTINCT MONTH(`data`) AS `month`,YEAR(`data`) AS `year` FROM `posts` ORDER BY `data` DESC";
 $all = $this->fetchAll($q);
 if (count($all) > 0) {
  foreach ($all as $info) {
$months[] = array('month_name'=>$this->months($info['month']),'year'=>$info['year'],'month'=>$info['month']);
  }
  return $months;
 }else{
  return false;
 }
}

And my Error:

Fatal error: Uncaught exception 'Zend_Db_Statement_Exception' with message 'SQLSTATE[21000]: Cardinality violation: 1241 Operand should contain 1 column(s)' in

Any help?

Answer 1

Are you missing out a stage in the process? The query statement line as below:

    /**
 * Returns a list with all the months for the archive
 *
 * @return array
 */
public function Archive()
{
 $q = "SELECT DISTINCT MONTH(`data`) AS `month`,YEAR(`data`) AS `year` FROM `posts` ORDER BY `data` DESC";
 $stmt = $db->query($q);
 $all = $stmt->fetchAll(); 
 if (count($all) > 0) {
  foreach ($all as $info) {
$months[] = array('month_name'=>$this->months($info['month']),'year'=>$info['year'],'month'=>$info['month']);
  }
  return $months;
 }else{
  return false;
 }
}