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Re: PostgreSQL: Question about rules

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On Thu, 2006-11-16 at 11:34 -0800, Jeremy Smith wrote:
> Example:
> 
> ------------------------ Begin example SQL
> create table parent (
> 	id serial primary key,
> 	foo integer,
> );
> 
> create table child (
> 	id integer references parent(id) on delete cascade,
> 	bar integer
> )
> 
> create view child_with_parent_explicit as
> 	select parent.id, parent.foo, child.bar from parent join child using(id);
> 
> -- this next one is just a copy of the first, to differentiate the two scenarios
> create view child_with_parent_implicit as
> 	select parent.id, parent.foo, child.bar from parent join child using(id);
> 
> create rule "child_with_parent_explicit_insert" as
> 	on insert to child_with_parent_explicit do instead (
> 		insert into parent(id, foo) values(new.id, new.foo);
> 		insert into child(id, bar) values(new.id, new.bar);
> 	);
> 

create rule "child_with_parent_explicit_insert" as
        on insert to child_with_parent_explicit do instead (
                insert into parent(id, foo) values(COALESCE
(new.id,NEXTVAL('parent_id_seq')), new.foo);
                insert into child(id, bar) values(COALESCE
(new.id,CURRVAL('parent_id_seq')), new.bar);
        );


I'm not sure if this is what you're looking for, but does this help?

Regards,
	Jeff Davis



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