From: | Karel Zak <zakkr(at)zf(dot)jcu(dot)cz> |
---|---|
To: | Marcelo Pereira <gandalf(at)sum(dot)desktop(dot)com(dot)br> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Delete Cascade |
Date: | 2001-03-12 15:15:01 |
Message-ID: | 20010312161501.B21006@ara.zf.jcu.cz |
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Lists: | pgsql-general |
On Mon, Mar 12, 2001 at 12:07:13PM -0300, Marcelo Pereira wrote:
> Hi,
>
> I am in trouble deleting rows in cascade.
>
> I have a scheme like this:
>
> create table author (author_cod integer primary key, author_name char(20));
> create table book (book_cod integer primary key, book_autor integer references author(author_cod), book_title char(30));
>
> I would like to delete a 'author' in the author table and also all your books in the book table.
create table book (
book_cod integer primary key,
book_autor integer
references author(author_cod)
on delete cascade,
book_title char(30)
);
What is bad on PG's docs? ...see:
[ CONSTRAINT name ] REFERENCES reftable [ ( refcolumn ) ]
[ MATCH matchtype ]
[ ON DELETE action ]
[ ON UPDATE action ]
[ [ NOT ] DEFERRABLE ]
[ INITIALLY checktime ]
Karel
--
Karel Zak <zakkr(at)zf(dot)jcu(dot)cz>
http://home.zf.jcu.cz/~zakkr/
C, PostgreSQL, PHP, WWW, http://docs.linux.cz, http://mape.jcu.cz
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