我有一个小问题,我找不到答案。
我有一个名为product_features
的表,其中包含以下字段:
product_features
----------------------
id parent_id name order added_date
现在的问题是我刚刚插入了两行具有相同名称的行:
734 1 6008-2 test 0 2012-11-21 11:52:28
735 1 6008-2 test 0 2012-11-21 11:57:27
我已定义id - PRIMARY INDEX - AUTO INCREMENT
和parent_id - INDEX
Keyname Type Unique Packed Column Cardinality Collation
PRIMARY BTREE Yes No product_feature_id 671 A
product_feature_parent_id BTREE No No product_feature_parent_id 671 A
当我打印结果时,打印的唯一行是最后一行..我真的不明白为什么。这是我正在使用的功能:
public function printProductFeaturesTable($product_feature_parent_id = 0, $level = 0){
$sql = $this->mysqli->query("SELECT product_feature_id, product_feature_name
FROM product_features
WHERE product_feature_parent_id='" . $product_feature_parent_id . "'
ORDER BY product_feature_order");
if($sql->num_rows != 0) {
if($level != 0)
echo '<table cellpadding="0" cellspacing="1" class="dnd"><tbody>';
$i = 0;
while($row = $sql->fetch_assoc()) {
$i++;
echo '<tr>
<td width="30" valign="top" align="center">',
$i, '.
</td>
<td>',
$row['product_feature_name'],
'<div class="table-options">
<input type="hidden" name="product_feature_id[]" value="', $row['product_feature_id'], '" />
<a href="/admin/product-features/add-modify/', $row['product_feature_id'], '" class="ui-state-default ui-corner-all left"><span class="ui-icon ui-icon-pencil"></span></a>
<a href="javascript:if(confirm(\'Are you sure you want to delete this feature?\')) document.location = \'/admin/resources/php/product-features.php?p=delete&pfid=', $row['product_feature_id'], '\'" class="ui-state-default ui-corner-all left"><span class="ui-icon ui-icon-close"></span></a>
</div>';
$this->printProductFeaturesTable($row['product_feature_id'], $level + 1);
echo ' </td>
</tr>';
}
if($level != 0)
echo '</tbody></table>';
} else
if($product_feature_parent_id == 0)
echo '<tr><td align="center" colspan="2">Nici o specificatie de produs adaugata momentan!</td></tr>';
}
结果应该是这样的:
1. Test
1. Test subcategory
2. Test subcategory 2
3. 6008-2 test
4. 6008-2 test
但不是上面的例子,结果是:
1. Test
1. Test subcategory
2. Test subcategory 2
3. 6008-2 test // this is the last inserted row.. but where is the other one???
先谢谢你了!
答案 0 :(得分:1)
好吧..我刚刚发现唯一的问题是我的眼睛,因为你可以看到我按product_feature_order
排序结果,在本例中默认为0。
所以问题是它们显示的顺序不是插入的id的顺序,这真的让我很困惑。
感谢您的时间!