Question

我使用symfony 1.4并且我想分组一些数据，按分组列排序，然后选择记录最多的数据。我的代码如下所示：

$c = new Criteria();
$c->addGroupByColumn(MetricPeer::POST_TYPE_ID);
$c->addDescendingOrderByColumn(MetricPeer::POST_TYPE_ID);    
$posts = MetricPeer::doSelectOne($c);

我知道该行“$ c-＆gt; addDescendingOrderByColumn（MetricPeer :: POST_TYPE_ID）;”它只是按数字排序数据而且不正确。

Answer 1

public static function topPosts($limit,$source_id,$interval1,$interval2,$con = null) {
    if($con === null) $con = Propel::getConnection(self::DATABASE_NAME);
    $sql = "SELECT *, COUNT(post_id) AS value_occurrence FROM metric WHERE source_id LIKE ".$source_id." AND visit_out BETWEEN '".$interval1."' AND  '".$interval2."' GROUP BY post_id ORDER BY value_occurrence DESC LIMIT ".$limit."";
    $stmt = $con->prepare($sql);
    $stmt->execute();       
    $topreads = MetricPeer::populateObjects($stmt);
    return $topreads;
}

这是我现在的简单解决方案，我认为它也可能对其他人有用。谢谢。

Symfony 1.4 Criteria addGroupByColumn然后按大多数顺序排序

1 个答案: