php - 尝试对表中的SUM和GROUP BY结果进行排序时出现身份不明的索引

This question already has answers here:

How to read a SUM() grouping function in a PHP SELECT statement?
（3个答案）
11个月前关闭。
此代码用于从同一数据库中的两个表中选取选定的数据。这一部分工作得很好，但我不能让sum工作，因为它找不到sum中的列，例如：SUM(Forspris)和SUM(Levereratantal)

 <!doctype html>
<html>
<head>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<link rel="stylesheet" href="css.css">
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/morris.js/0.5.1/morris.css">

</head>
<body>

<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "garp";

$conn = new mysqli ($servername, $username, $password, $dbname);
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

/*    $query = $_GET['query']; */
    $orderkund = $_GET['Orderkundinput']; 
    $artikel = $_GET['Artikelinput']; 
    $startDate =$_GET['startDate']; 
    $endDate =$_GET['endDate'] ;


    $min_length = 2;
    $artikelQuery="";
    $orderkundQuery="";
    if(strlen($artikel) >= $min_length){ 
        $artikel = htmlspecialchars($artikel); 

        $artikel = mysqli_real_escape_string($conn, $artikel);
        $artikelQuery = " AND Artikelnr = '$artikel'";
    }
    if (strlen($orderkund) >= $min_length){ 
        $orderkund = htmlspecialchars($orderkund); 

        $orderkund = mysqli_real_escape_string($conn, $orderkund);
        $orderkundQuery = " AND OrderKund = '$orderkund'";
    }

    if (strlen($startDate) >= $min_length){ 
        $startDate = htmlspecialchars($startDate); 

        $startDate = mysqli_real_escape_string($conn, $startDate);
        $startDateQuery = " AND Orderdatum between '$startDate' ";
    }

    if (strlen($endDate) >= $min_length){ 
        $endDate = htmlspecialchars($endDate); 

        $endDate = mysqli_real_escape_string($conn, $endDate);
        $endDateQuery = "AND '$endDate'";
    }

    $query = $artikelQuery.$orderkundQuery.$startDateQuery.$endDateQuery;
    if(strlen($query) >= $min_length){ 
    $sql = "SELECT OrderHuvud.Ordernummer ,OrderHuvud.OrderserieIK ,OrderKund ,Fakturakund ,Orderdatum ,Erreferens ,Levereratvarde ,Radnummer ,Artikelnr ,Benamning ,Leveranstid ,Ursprungligtantal ,Levereratantal ,Forspris ,Bruttopris ,Varukostnad FROM garp.OrderHuvud left join garp.OrderRad on OrderHuvud.Ordernummer = OrderRad.Ordernummer where  OrderHuvud.OrderserieIK = 'K'" .$query;
    $raw_results = $conn->query ($sql);
        $row_cnt = false === $raw_results ? 0 : $raw_results->num_rows;
        echo " <p class='rows'> Numbers of rows loaded: $row_cnt </p>";
        if($row_cnt > 0){
   while($raw_result = mysqli_fetch_array($raw_results)){
       echo "<table class='table'><thead class='thead-light'><tr><th class='col'>".'Ordernummer'."</th><th class='col'>".'OrderserieIK'."</th><th class='col'>".'Orderkund'."</th><th class='col'>".'fakturakund'."</th><th class='col'>".'orderdatum'."</th><th class='col'>".'erreferens'."</th><th class='col'>".'leveratvarde'."</th><th class='col'>".'radnummer'."</th><th class='col'>".'artikelnr'."</th><th class='col'>".'benamning'."</th><th class='col'>".'leveranstid'."</th><th class='col'>".'Ursprungligtantal'."</th><th class='col'>".'Levereratantal'."</th><th class='col'>".'forspris'."</th><th class='col'>".'bruttopris'."</th><th class='col'>".'varukostnad'."</th></tr></thead>";
       echo "<tbody><tr><td>".$raw_result['Ordernummer']."</td><td>".$raw_result['OrderserieIK']."</td><td>".$raw_result['OrderKund']."</td><td>".$raw_result['Fakturakund']."</td><td>".$raw_result['Orderdatum']."</td><td>".$raw_result['Erreferens']."</td><td>".$raw_result['Levereratvarde']."</td><td>".$raw_result['Radnummer']."</td><td>".$raw_result['Artikelnr']."</td><td>".$raw_result['Benamning']."</td><td>".$raw_result['Leveranstid']."</td><td>".$raw_result['Ursprungligtantal']."</td><td>".$raw_result['Levereratantal']."</td><td>".$raw_result['Forspris']."</td><td>".$raw_result['Bruttopris']."</td><td>".$raw_result['Varukostnad']."</td></tr></tbody></table>";

   }
        }

        else{
   echo "No return";
        }
    }
    else{
        echo "Minimum length is ".$min_length;
    }
$query = substr($query, 4);
$sql2 = "SELECT OrderKund,Artikelnr, SUM(Forspris),SUM(Levereratantal) FROM orderhuvud
left JOIN orderrad on orderhuvud.Ordernummer = orderrad.Ordernummer
 where ". $query ." GROUP BY OrderKund,Artikelnr";
    $result = mysqli_query($conn, $sql2) or die(mysqli_error($conn));
    while($row = mysqli_fetch_array($result)){
        echo print_r($row);     }
        echo "<table class='table'><thead class='thead-light'><tr><th class='col'>".'OrderKund'."</th><th class='col'>".'Artikelnr'."</th><th class='col'>".'Forspris'."</th><th class='col'>".'levereratantal'."</th></tr></thead>";
        echo "<tbody><tr><td>".$row['OrderKund']."</td><td>".$row['Artikelnr']."</td><td>".$row['Forspris']."</td><td>".$row['levereratantal']."</td></tr></tbody></table>";    ?>
</body>
</html>

最佳答案

由于使用的是group by和内置MySQL函数，因此必须使用列名alias，如下所示：

SELECT OrderKund, Artikelnr, SUM(Forspris) as Forspris,SUM(Levereratantal) as Levereratantal FROM orderhuvud

除非使用alias，否则将无法将列标识为已命名。
希望这有帮助。

关于php - 尝试对表中的SUM和GROUP BY结果进行排序时出现身份不明的索引，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/53830814/

上一篇：php - 如何在此液体 for 循环上添加迭代

下一篇：html - 通过 VBA 使用 QuerySelector 单击 HTML 元素

html - 嵌入带有参数的 svg 对象

html - 媒体查询不适用于电子邮件

php - Joomla 安装 : 'Database Type' not showing in drop down selection box

php - PayPal IPN 传递状态设置为 "Retrying"，HTTP 响应代码为 404

php - 带 REDIS 的套接字 IO。服务器收不到 channel 消息

javascript - 在图像后面对齐视频

php - 我的sql数据库循环在php中 float ？

PHP 根据 <selection> 中的选定选项检索 mysql 存储的字符数据返回错误的字符

php - 使用 PHP 删除空子文件夹