php - 使用 group by 函数对多列进行 sum()

Question

我需要收集每列的计数，并且每行有多个结果。问题在于这些列重复了第一列的值。

  $sql="SELECT MODEL, 
     sum(CLICK) AS LOCCLICK, sum(VIEW) AS LOCVIEW, sum(EMAIL) AS LOCEMAIL, sum(SHARE) AS LOCSHARE
      FROM     STAT
      WHERE    ID = ".$id."
      GROUP BY MODEL";
       $result = $mysqli->query($sql);

        if ($result->num_rows > 0) {
            // output data of each row
            while($row = $result->fetch_assoc()) {
                $clickcoun = $row['LOCCLICK'];
                $viewcoun = $row['LOCVIEW'];
                $emailcoun = $row['LOCEMAIL'];
                $sharecoun = $row['LOCSHARE'];
                $model = $row['MODEL'];
                echo "\n";
                // Log the stats into the daily updates.
                 $sqlx = 'INSERT INTO DAILY (ID, QDATE, VIEWS, CLICKS, EMAILS, SHARES, MODEL) 
                VALUES ('.$id.', NOW(), '.$viewcoun.', '.$clickcoun.', '.$emailcoun.', '.$sharecoun.', "'.$model.'" )';
                  $mysqli->query($sqlx);
                  } 
                 } else {
                      echo "0 results"; die();
                 }

我正在寻找的结果如下:

福特:浏览量 = 302，电子邮件 = 21，分享 = 10

道奇:浏览量 = 567，电子邮件 = 41，分享 = 13

雪佛兰:浏览次数 = 324，电子邮件 = 23，分享 = 9

我想将这些输入到每日统计数据分割中，以便我可以查询它们，将它们放入图表中并显示它们的每日覆盖范围。在月底，我计划以相同的方式再次将它们分解为每月概览。

Answer 1

您不需要循环来执行此操作。只需使用 insert 。 。 。选择:

INSERT INTO DAILY (ID, MODEL, CLICKS, VIEWS, EMAIL, SHARES, QDATE) 
    SELECT $id, MODEL, sum(CLICK) AS LOCCLICK, sum(VIEW) AS LOCVIEW,
           sum(EMAIL) AS LOCEMAIL, sum(SHARE) AS LOCSHARE, now()
    FROM STAT
    WHERE ID = ".$id."
    GROUP BY MODEL;