php:Can't find the column but it is in the database
Question
I am having trouble figuring out what's wrong whit my code. The code is used to take out specific columns from 2 big tables from a database. But we also need to sum 1 specific value when after I have used the query.
The problem is in this part
$query = substr($query, 4);
$sql2 = "SELECT SUM(Forspris) FROM orderrad
JOIN orderhuvud on orderhuvud.OrderKund = orderrad.Orderdatum
where ". $query;
echo $sql2;
$result = mysqli_query($conn, $sql2) or die(mysqli_error($conn));
while($row = mysqli_fetch_array($result)){
echo print_r($row); }
this is the error i get:
SELECT SUM(Forspris) FROM orderrad JOIN orderhuvud on orderhuvud.OrderKund = orderrad.Orderdatum where OrderKund = '15' AND Orderdatum between '2015-04-16' AND '2015-05-06'Unknown column 'orderrad.Orderdatum' in 'on clause'
but it longer up in the code it can find the column orderdatum in the query
<!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'] ;
$MCkys = "orderdatum";
$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 SUM(Forspris) FROM orderrad
JOIN orderhuvud on orderhuvud.OrderKund = orderrad.Orderdatum
where ". $query;
echo $sql2;
$result = mysqli_query($conn, $sql2) or die(mysqli_error($conn));
while($row = mysqli_fetch_array($result)){
echo print_r($row); }
?>
Column Names:
1 answers
solution1
0 ACCPTED 2018-12-18 08:15:50
SELECT SUM(Forspris) FROM orderrad where orderhuvud.OrderKund
Your table is orderrad and in your where you try to use another table ( orderhuvud ) but you need to join first in order to use it, or select from it.
SELECT SUM(Forspris) FROM orderrad
JOIN orderhuvud on orderhuvud.your_column_to_match = orderrad.your_column_to_match
where orderhuvud.OrderKund = '15' AND orderhuvud.Orderdatum between '2015-04-16' AND '2015-05-06'
Above code will join your table. In order to join them you need to find this column that both tables share and is the same for them so you join them on this.
Just a really clear example, please don't hate for the w3school, this example is really really clear for inner join. Read more here!!!
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.