Question

我有一个非常简单的问题，但遗憾的是我无法自己解决这个问题。我有一个包含12个玩家的列表，这些玩家都有（唯一的）ID，等级，属性1和属性4。我只想要具有最高评级的玩家的行，然后是attribute1然后是attribute4。因此它首先必须对评级进行排序，如果有2个评级为84，SQL将检查attribute1等。这是我的代码。

$sql = "SELECT * FROM `players_db` WHERE `id` = $player[0] OR `id` = $player[1] OR `id` = $player[2] OR `id` = $player[3] OR `id` = $player[4] OR `id` = $player[5] OR `id` = $player[6] OR `id` = $player[7] OR `id` = $player[8] OR `id` = $player[9] OR `id` = $player[10] OR `id` = $player[11] ORDER BY `rating` DESC , `attribute1` DESC, `attribute4` DESC";
$result = $conn->query($sql);
while ($row = mysqli_fetch_assoc($result)) {
echo $row['rating'];
echo '<br>';
}

我无法弄清楚如何更进一步，因为我已经尝试了

SELECT MAX（＆＃39; rating＆＃39;）FROM players_db WHERE ...

但是它只获得了最高玩家的评分，那么如何获得评分最高的玩家的整行，然后是attribute1和attribute4？

我希望有人可以帮助我！谢谢！

Answer 1

此查询将提供与评分最高的玩家对应的记录。如果出现平局，attribute1和attribute4将用于按顺序打破平局。

SELECT *
FROM players_db
ORDER BY rating DESC, attribute1 DESC, attribute4 DESC
LIMIT 1

Answer 2

使用$sql = "SELECT * FROM `players_db` WHERE `id` = $player[0] OR `id` = $player[1] OR `id` = $player[2] OR `id` = $player[3] OR `id` = $player[4] OR `id` = $player[5] OR `id` = $player[6] OR `id` = $player[7] OR `id` = $player[8] OR `id` = $player[9] OR `id` = $player[10] OR `id` = $player[11] ORDER BY `rating` DESC , `attribute1` DESC, `attribute4` DESC LIMIT 1"; $result = $conn->query($sql); while ($row = mysqli_fetch_assoc($result)) { echo $row['rating']; echo '<br>'; }，首先它会按评分对记录进行排序，然后它会选择使用顶级AS的第一行{{1}}：

{{1}}

选择具有最高值的整行结果

2 个答案: