Php 如何连接多个查询
我用数据库中的数据创建了这个表。 表: 我需要所有的行与五月是在一行 像这样: 2019年5月| 3 | 3 | 2| 等等 我的数据库如下所示: 到目前为止我得到了这个密码Php 如何连接多个查询,php,mysql,sql,Php,Mysql,Sql,我用数据库中的数据创建了这个表。 表: 我需要所有的行与五月是在一行 像这样: 2019年5月| 3 | 3 | 2| 等等 我的数据库如下所示: 到目前为止我得到了这个密码 $tipsportsql = mysqli_query($conn, "SELECT DATE_FORMAT(datum, '%b %Y') AS 'Monthyear', count(projekt) AS 'project' FROM zapasy WHERE projekt = '0' AND komentato
$tipsportsql = mysqli_query($conn, "SELECT DATE_FORMAT(datum, '%b %Y') AS 'Monthyear', count(projekt) AS 'project' FROM zapasy WHERE projekt = '0' AND komentator1 = '$firstname $lastname' OR projekt = '0' AND komentator2 = '$firstname $lastname' GROUP BY Monthyear");
$slaviasql = mysqli_query($conn, "SELECT DATE_FORMAT(datum, '%b %Y') AS 'Monthyear', count(projekt) AS 'project' FROM zapasy WHERE projekt = '1' AND komentator1 = '$firstname $lastname' OR projekt = '1' AND komentator2 = '$firstname $lastname' GROUP BY Monthyear");
$betsql = mysqli_query($conn, "SELECT DATE_FORMAT(datum, '%b %Y') AS 'Monthyear', count(projekt) AS 'project' FROM zapasy WHERE projekt = '2' AND komentator1 = '$firstname $lastname' OR projekt = '2' AND komentator2 = '$firstname $lastname' GROUP BY Monthyear");
还有这个
<tbody>
<?php while ($tip = mysqli_fetch_assoc($tipsportsql)) {?>
<tr>
<td>
<?=$tip['Monthyear'] ?>
</td>
<td>
</td>
<td>
</td>
<td>
<?=$tip['project']?>
</td>
</tr>
<?php } while ($tip = mysqli_fetch_assoc($slaviasql)) {?>
<tr>
<td>
<?=$tip['Monthyear'] ?>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
<?=$tip['project']?>
</td>
</tr>
<?php }while ($tip = mysqli_fetch_assoc($betsql)) {?>
<tr>
<td>
<?=$tip['Monthyear'] ?>
</td>
<td>
</td>
<td>
<?=$tip['project']?>
</td>
<td>
</td>
<td>
</td>
</tr>
<?php }?>
</tbody>
非常感谢您的帮助。我相信您需要这样的查询:
SELECT DATE_FORMAT(datum, '%b %Y') AS Monthyear,
SUM(projekt = 0) AS project_1,
SUM(projekt = 1) AS project_2,
SUM(projekt = 2) AS project_3
FROM zapasy
WHERE CONCAT(?, ?) IN (komentator1, komentator2)
GROUP BY Monthyear;
请特别注意参数占位符。您需要学习如何使用参数,以便查询不会受到意外语法错误和SQL注入攻击的攻击