just some thoughts, this is a nice way of creating one "tree"-table of unlimited
levels, top-level-items has for example parent_id -1, and if you want to get the items
(the childs of a parent) just say
select * from items where parent_id = x
create table items (
item_id int unsigned not null auto_increment
parent_id int unsigned not null default -1
somedata varchar(1000)
)
kinds regards
Tomas
----- Original Message -----
From: "Realbad Atgames" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, April 09, 2001 1:12 AM
Subject: Hierarchical lists
> Hello, I'm new to MySQL and have ran into a problem in
> designing my database. I have a table of items, A, and
> each item should have any number of other records from
> another table, B, associated with it. I also need to
> have any number of records from table C associated
> with table B. They need to be associated in such a way
> that I can quickly find out what is associated with a
> record in table A, as well as what is associated with
> a record in table B. In other words, how do I store an
> array of pointers? What's the best way to do this? I
> couldn't find anything relevant in the docs.
>
> Any help greatly appreciated.
>
>
>
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