连接从数据库返回的相等值

Question

I'm using a database in MySQL and returning values ​​via PHP. I'm using the framework Zend2.

I have the following table:

[ID] | [Name] | [Amount]
-----|--------|---------
1    | Alex   | 10
-----|--------|---------
2    | Bruno  | 5
-----|--------|---------
3    | Miguel | 6
-----|--------|---------
4    | Ana    | 5

I need to unite draws. In this case, instead of displaying

the result should display

Code to show in HTML:

<?php foreach ($rows as $row) : ?>
    <tr>
        <td><?php echo ++$i; ?></td>
        <td><?php echo $this->escapeHtml($row->amount); ?></td>
        <td><?php echo $this->escapeHtml($row->name); ?></td>
        <td><img src="<?php echo $row->imageMedal($i); ?>"/></td>
    </tr>
<?php endforeach; ?>

The Zend2 structure has not changed.

Answer 1

You can GROUP_BY amount and concatenate Name in the groups with the same amount , then you can order by amount from the greatest value and cut the first three rows :

SELECT `amount`
     , GROUP_CONCAT(`Name` SEPARATOR ', ') AS `name`
FROM `table` 
GROUP BY `amount` 
ORDER BY `amount` DESC
LIMIT 0, 3

Answer 2

@KeplerBR，这是ZF2中用于您查询的解决方案： https ://gist.github.com/settermjd/3360ccabb2b761a6ee11