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如果知道id为2了，如何一次搜索得出 “新闻 新闻上级”呢？

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Release： 2016-06-13 10:37:49
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如果知道id为2了，怎么一次搜索得出 “新闻 新闻下级”呢？？
表：table
id tid typename
1 0 根目录
2 1 新闻
3 2 新闻下级

如果知道id为2了，怎么一次搜索得出 “新闻 新闻下级”呢？？

------解决方案--------------------
$id= 2;
$sql = "select * from tbl_name where id=$id or tid=$id";

如果还有下下级，就不好使了，要递归

------解决方案--------------------
递归

Related labels：
id quot
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