Question

我有这个民意调查的事情，民意调查A有3个选项让我们说：选项a选项b选项c，选项a获得3票，选项b获得2票选项c获得3票，

    OPTIONS     VOTES 
    option a       3
    option b       2
    option c       3

我有这个mysql查询，它通过votesCount获取选项和订单，限制1获得最佳答案，但在我的示例中，顶部有两个选项，它们都具有最高值，我想查询到得到这两个选项，不仅是一个，所以我必须摆脱LIMIT 1

Mysql查询是

$query = "SELECT `option` FROM `options` WHERE `pid` = '$pid' AND `votesCount` != '0' ORDER BY `votesCount` DESC LIMIT 1";

任何建议？

Answer 1

以下是任何SQL方言的标准方法：

select p.*
from poll p
where p.votes = (select max(votes) from poll)

Answer 2

感谢@Gordon Linoff提示，这就是现在的情况

$query = "SELECT `option` FROM `options` WHERE `pid` = '$pid' AND `votesCount` = (SELECT MAX(`votesCount`) FROM `options` WHERE `pid` = '$pid' ORDER BY `votesCount` DESC LIMIT 1)";
    ///Just a DB function, don't mind the 0, i'm using a class
    $res = $db->get_rows($db->select($query),0);
    $merged = array();
    foreach ($res as $r){
        $merged[] = $r->option;
    }
    $merged = implode(',',$merged);
    return $merged;

mysql获得多个选择的最大值

2 个答案: