將跟蹤ID從表2的列復制到表1的列

Question

在下圖中，一旦單擊第三列中的“ submit ”按鈕，我想將跟蹤ID從表2的列復制到表1的列 ...。

表訂單

在第4列中顯示的跟蹤ID”

我將訂單信息保存在表訂單中 [表1]

我將跟蹤ID保存在表awbno [表2]和列tracking_two中

track.php

<?php

$con = mysqli_connect("localhost","root","","do_management4");

$result = mysqli_query($con,"SELECT * FROM orders");

echo "<table border='1'>
<tr>
<th>order</th>
<th>payment</th>
<th>generate</th>
<th>tracking id</th>
</tr>";

while($row = mysqli_fetch_array($result))
{
$id = $row['id'];
echo "<tr>";
echo "<td>" . $row['order_id'] . "</td>";
    echo "<td>" . $row['payment_type'] . "</td>";

    echo "<td>";
    if (empty($row['tracking_one'])) {
        echo "<form method='post' action='call.php'>";
        echo "<input type ='hidden' name='id' value='$id'>
          <input type='submit'>
          </form>";
    }
    echo "</td>";
echo "<td>" . $row['tracking_one'] . "</td>";

echo "</tr>";
}
echo "</table>";

mysqli_close($con);

?>

call.php

<?php

$con = mysqli_connect("localhost","root","","do_management4");
$result = mysqli_query($con,"SELECT * FROM orders");

$id = $_POST['id']; 
$r = ""; 

$sql = $con->query("update orders set tracking_one = '$r' WHERE id ='$id'");
mysqli_close($con);

?>

我在google中找不到任何特定的查詢，什么查詢對我有幫助？

Answer 1

您的查詢應該是這樣的

$sql = $con->query("update orders set tracking_one = (select tracking_two from awbno WHERE id =$id)");