On Fri, 15 Jun 2007 00:41:47 -0700, strawberry <zac.carey@gmail.com>
wrote:

>Perhaps you should take a look at nested sets:
>
>http://dev.mysql.com/tech-resources/...ical-data.html
>
>There's a good article at sitepoint too

This is a good thing for trees but for linked list, i'm not sure it is
of great help, it would result in the solution Jon was running away
from (updating in mean half of the rows for each insert/delete).