Re: Self-referential records

On Sunday 24. January 2010 14.43.10 Ovid wrote:
> Assuming I have the following table:
>
> CREATE TABLE refers (
> id SERIAL PRIMARY KEY,
> name VARCHAR(255) NOT NULL,
> parent_id INTEGER NOT NULL,
> FOREIGN KEY (parent_id) REFERENCES refers(id)
> );
> I need to insert two records so that "select * from refers" looks like this:
>
> =# select * from refers;
> id | name | parent_id
> ----+------+-----------
> 1 | xxxx | 1
> 2 | yyy | 2
>
> The first record can't be inserted because I don't yet know the parent_id.

I've got a similar structure. I just declared the root node with both id and
parent_id=0.

regards,
--
Leif Biberg Kristensen
http://solumslekt.org/