Question

我正在努力展示我想要的结果。我需要创建一个表，该表可以对机架列进行分组，机架列将是表的名称，内容是从布局列中得出的，是该表的数据。


 $sql = ' SELECT  rack, id, GROUP_CONCAT(layout) as grouped_name FROM sorting_items GROUP BY rack ORDER BY rack ASC';

$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // output data of each row
    while($row = $result->fetch_assoc()) {


        echo '<td>'.$row['rack'].' </td>';
        echo '<table style=" border: 1px solid black; width:100%"><tr>';
        echo '<td>'.$row['grouped_name'].' </td>'; 
        echo '</tr></table>';
    }
} else {
    echo "0 results";
}
$conn->close();

我的桌子是这个

╔══════════╦══════╗
║  layout  ║ rack ║
╠══════════╬══════╣
║  cisco1  ║ case1║
║  cisco2  ║ case1║
║  cisco3  ║ case1║
║  juniper ║ case2║
║  cisco4  ║ case2║
╚══════════╩══════╝

我目前正在获取

╔══════════╦══════════════════════╗
║   case1  ║ cisco1,cisco2,cisco2 ║
╚══════════╩══════════════════════╝
╔══════════╦══════════════════════╗
║   case2  ║ juniper,cisco4       ║
╚══════════╩══════════════════════╝

希望通过以上代码实现这一目标

╔══════════╗     
║  case1   ║ 
╠══════════╣
║  cisco1  ║ 
║  cisco2  ║ 
║  cisco3  ║ 
╚══════════╝

╔══════════╗
║  case2   ║ 
╠══════════╣
║  juniper ║ 
║  cisco4  ║ 
╚══════════╝

Answer 1

看起来您在结果数据循环中实际想要的是这样的，它将逗号分隔grouped_name字段，然后在单独的表行上输出每个值：

while($row = $result->fetch_assoc()) {
    echo '<table style=" border: 1px solid black; width:100%">';
    echo '<tr><th>'.$row['rack'].' </th></tr>';
    foreach (explode(',', $row['grouped_name']) as $name) {
        echo '<tr><td>'.$name.' </td></tr>'; 
    }
    echo '</table>';
}

MySQL从一列到回显表分组相同的值

1 个答案: