我想让php给我一些关于我的参与者名单的统计数据。我需要知道每个联盟的每个状态有多少人(来自) 如果你不知道所有的隶属关系和stati,有没有简单的方法呢?
<?php
include 'includes/config.php';
$sql="SELECT * FROM participants ORDER BY `from`, `status`";
$self = mysql_query($sql);
echo "<table><tr><th>Name</th><th>Affiliation</th><th>Status</th></tr>";
while ($row = mysql_fetch_array($self)) {
echo "<tr><td>".$row['name']."</td><td>".$row['from']."</td><td>".$row['status']."</td></tr>";
}
echo "</table>";
?>
数据库的结构是
Name - Affiliation - Status
所以注册的每个人都会被放入
Bob - Minnesota University - Phd Student
现在我想要一份所有隶属关系和每个联盟的列表,我需要一份所有站点的列表以及有多少人分享它们。
所以喜欢:
Minnesota University
Phd Student: 5
Professor: 12
Bachelor Student: 4
Caltech
Phd Student: 1
Professor: 14
Bachelor Student:32
答案 0 :(得分:0)
这可能是这样的:
$sql="SELECT count(*) as total_status, * FROM participants
GROUP BY `status`, `from` ORDER BY `from`";
$self = mysql_query($sql);
echo "<table>
<tr>
<th>Name</th>
<th>Affiliation</th>
<th>Status</th>
<th>Total Status</th>
</tr>";
while ($row = mysql_fetch_array($self)) {
echo "<tr>
<td>".$row['name']."</td>
<td>".$row['from']."</td>
<td>".$row['status']."</td>
<td>".$row['total_status']."</td>
</tr>";
}
echo "</table>";