James Robinson <[EMAIL PROTECTED]> writes:
> Given a reference to id=3, would a recursive query be the trick to
> unrolling the list to discover id=1 as the head using a SQL one-liner?
I think you could do it, but don't have the syntax in my head.
> would any potential recursive query implement
James,
> Would recursive queries be the trick to doing things like unwinding a
> linked-list to either the head or tail, with:
Yes. Also check out contrib/ltree and contrib/tablefunc in your handy-dandy
PostgreSQL source code.
--
Josh Berkus
Aglio Database Solutions
San Francisco
---
Would recursive queries be the trick to doing things like unwinding a
linked-list to either the head or tail, with:
create table list (
id int primary key,
parent int references list(id)
);
insert into list values (1, null); -- head of
