Mysql查询发布日期减去7天

这不断出现错误，我不明白为什么

SELECT
  i.user_id
FROM (SELECT
    SUM(us.score) AS score_sum,
    us.user_id
      FROM user_scores us
      WHERE us.created >= DATE(DATE_SUB(NOW(),INTERVAL 7 DAY))
      GROUP BY us.user_id) AS i
ORDER BY i.score_sum
LIMIT 1

带有消息的异常“CDBEException”

CDbCommand无法执行SQL语句：CDbCommand无法准备SQL语句：SQLSTATE[HY000]：常规错误：1接近7:语法错误

执行的SQL语句为：

SELECT
  i.user_id
FROM (SELECT
    SUM(us.score) AS score_sum,
    us.user_id
      FROM user_scores us
      WHERE us.created >= DATE(DATE_SUB(NOW(),INTERVAL 7 DAY))
      GROUP BY us.user_id) AS i
ORDER BY i.score_sum
LIMIT 1



<?php

class WinnerCommand extends CConsoleCommand
{
    public function actionSelect()
    {
        $sql = "SELECT i.user_id FROM
            (SELECT SUM(us.score) AS score_sum, us.user_id FROM user_scores us
            WHERE us.created >= DATE(DATE_SUB(NOW(),INTERVAL 7 DAY))
            GROUP BY us.user_id) AS i
            ORDER BY i.score_sum
            LIMIT 1";
        $user_id = Yii::app()->db->createCommand($sql)->queryScalar();
        echo $user_id;
        return $user_id;
    }

}

---

？>

我无法解释这个问题，但您可以在表达式中删除子查询。也许这将有助于：

        SELECT us.user_id
        FROM user_scores us
        WHERE us.created >= DATE(DATE_SUB(NOW(), INTERVAL 7 DAY))
        GROUP BY us.user_id)
        ORDER BY SUM(us.score)
        LIMIT 1

---

在您的表中创建了什么数据类型？您通过什么API调用它？您是否在任何地方使用预处理语句占位符？如果您在客户端中直接执行上面的查询，它是否会像应该的那样运行？什么MySQL版本？创建的是一个时间戳。我在Yii框架内使用它。我认为我们不能在ORDER BY close中使用聚合和。@artragis。这是允许的，在MySQL和我所知道的所有其他支持SQL的数据库中。好吧，我不知道，很高兴打开这个主题。