Question

有人可以告诉我你将如何输出这个？输出就像位置M F总计。

   SELECT location, SUM(IF(gender='M',1,0)) AS M,
    SUM(IF(gender='F',1,0)) AS F, COUNT(*) AS total
    GROUP by location;

取自 - http://dev.mysql.com/tech-resources/articles/wizard/page3.html

由于

修改

如何获得像

这样的答案

location    M   F   total
Boston          1   2       3
Cagliari    1   2   3
London          1   1   2
Manchester  1   1   2
Marseille   1   2   3
Milano          2   0   2
New York    2   2   4
Paris           1   1   2
Roma            3   0   3

Answer 1

循环遍历它并将其回显到表中：

<?php 
    $q="SELECT location, SUM(IF(gender='M',1,0)) AS M,
    SUM(IF(gender='F',1,0)) AS F, COUNT(*) AS total
    GROUP by location";
    $query=mysql_query($q);
    echo '<table>';
    while($r=mysql_fetch_assoc($query)){
      echo '<tr>';
      echo '<td>'.$r['location'].'</td>';
      echo '<td>'.$r['M'].'</td>';
      echo '<td>'.$r['F'].'</td>';
      echo '<td>'.$r['total'].'</td>';
      echo '</tr>';
    }
    echo '</table>';
?>

你会如何输出count（）？

1 个答案: