我有以下语法用于在PHP中显示MySQL查询:
function get_dayssincecapture($db)
{
$result = $db->query("SELECT DATEDIFF(now(), sarrive)as days,count(loadnumber) as loads from v2loads where adminstatus='captured' group by DATEDIFF(now(), sarrive) ");
return $result;
}
$dayssincecapture = get_dayssincecapture($db);
显示语法:
<table border=1>
<tr>
<? while($row = $dayssincecapture->fetch(PDO::FETCH_ASSOC)) { ?>
<td><? echo $row['days']; ?><br><? echo $row['loads']; ?></td>
<? } ?>
</tr>
</table>
这会产生以下屏幕输出
如何通过表格语法更改以将days字段作为行标题并将load字段作为表格的第二行?
所以我想要的是:
一如既往地谢谢,
答案 0 :(得分:4)
尝试:
<?php
$dayssincecapture = get_dayssincecapture($db);
$data = array('days' => array(), 'loads' => array());
while($row = $dayssincecapture->fetch(PDO::FETCH_ASSOC)) {
$data['days'][] = $row['days'];
$data['loads'][] = $row['loads'];
}
?>
<table style="border: 1px solid #000">
<tr>
<td>Days</td>
<?php foreach ( $data['days'] as $day ) { ?>
<td><?php echo $day; ?></td>
<?php } ?>
</tr>
<tr>
<td>Loads</td>
<?php foreach ( $data['loads'] as $load ) { ?>
<td><?php echo $load; ?></td>
<?php } ?>
</tr>
</table>
答案 1 :(得分:1)
如果您想在MySQL中执行此类转换,那么您将转动数据。 MySQL没有pivot函数,但您可以使用带有CASE
语句的聚合函数来复制它:
select
count(case when DATEDIFF(now(), sarrive) = 1 then loadnumber end) as Day_1,
count(case when DATEDIFF(now(), sarrive) = 2 then loadnumber end) as Day_2,
count(case when DATEDIFF(now(), sarrive) = 3 then loadnumber end) as Day_3,
count(case when DATEDIFF(now(), sarrive) = 4 then loadnumber end) as Day_4,
count(case when DATEDIFF(now(), sarrive) = 5 then loadnumber end) as Day_5,
count(case when DATEDIFF(now(), sarrive) = 6 then loadnumber end) as Day_6,
count(case when DATEDIFF(now(), sarrive) = 7 then loadnumber end) as Day_7
from v2loads
where adminstatus='captured'
您也可以在预准备语句中编写此代码,以便动态创建此代码,因为这些值将是未知的。
答案 2 :(得分:1)
您可以尝试:
<?php
while($row = $dayssincecapture->fetch(PDO::FETCH_ASSOC)) {
$days_row .= "<td>" . $row['days'] . "</td>";
$loads_row .= "<td>" . $row['loads'] . "</td>";
}
?>
<table>
<tr>
<td>Days</td>
<?php echo $days_row; ?>
</tr>
<tr>
<td>Loads</td>
<?php echo $loads_row; ?>
</tr>
</table>