怎么取数据库里的值？
数据库如下。cate1是大类。每个大类下又有小类。
怎么查找才能得到以下结果
id cate1
1 Protect Phone Case Table Protection Power Bank Protection
2 Power Power Bank Car Charger Wall Charger
3 Keyboard&Mouse Keyboard Mouse
4 Headphone Headphone Earphone Bluetooth Headphone
5 Bluetooth_Speaker Power Bank Car Charger Wall Charger
用sql语句怎么实现?在php中怎么实现？
每个大类下，跟着他的小类作为一条数据，建个新表。
------解决方案--------------------
<br />$sqlstr = "select * from table where id<6";<br />$query = mysql_query($sqlstr) or die(mysql_error());<br />while($thread=mysql_fetch_array($query)){<br /> $result[] = $thread;<br />}<br />print_r($result);<br />
建议一开始建立表结构的时候考虑下无限级分类；然后把你这个表好好优化下那样获取就更好了。select cate1, group_concat(cate2) as cate2 from tbl_name where cate2!='' group by cate1 order by id
<br /> cate1 cate2 <br />Protect Power Bank Protectio,Table Protection,Phone Case <br />Power Wall Charger,Car Charger,Power Bank <br />Keyboard&Mouse Mouse,Keyboard <br />Headphone Bluetooth Headphone,Earphone,Headphone <br />Bluetooth_Speaker Wall Charger,Car Charger,Power Bank <br />
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