On 5 January 2011 15:28, Radosław Smogura
<rsmogura@softperience.eu> wrote:
On Wed, 05 Jan 2011 21:50:11 +1100, Craig Ringer <
craig@postnewspapers.com.au> wrote:
On 01/05/2011 07:31 PM, Radosław Smogura wrote:
* you have your id, before executing query, (in contrast to all this
autoincrement) so you may put it in dependant rows
Do you mean that with a UUID, you don't need to talk to the database
at all, you can generate an ID with no interaction with / involvement
with the database at all? Because other than that, there's not much
difference in how you normally work with them.
With a sequence, you might:
CREATE SEQUENCE x_id_seq;
CREATE TABLE x (
id integer PRIMIARY KEY DEFAULT nextval('x_id_seq'),
y integer
);
INSERT INTO x(y) VALUES (1);
It's simpler to write:
book_id = new uuid();
insert into book values(book_id,....);
insert into chapters values(new uuid(), book_id, ...);
isn't it?
For me it is simpler just to write this:
bookid = insert into books(...) values(...) returning book_id;
insert into chapters(book_id, ...) values( bookid, ...);
but it's a matter of taste, I think.
regards
Szymon
