If I know that id is 2, how can I search for "News and News superiors" at a time?
Source: Internet
Author: User
If I know that id is 2, how can I search for "news and news ?? Table: tableidtidtypename10 root directory 21 News 32 if the news sublevel knows that id is 2, how does one search for "News and News sublevel ??, $ Id = 2; $ SQL = & quot; s if you know that the id is 2, how can you find "News and News subordinates" at one time ??
Table: table
Id tid typename
1 0 Directory
2 1 News
3 2 news subordinates
If I know that id is 2, how can I search for "news and news ??
------ Solution --------------------
$ Id = 2;
$ SQL = "select * from tbl_name where id = $ id or tid = $ id ";
If there are lower-level sub-levels, it is difficult to do so. recursion is required.
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