Thread: Nested composite types again
Hi,
I have already read this http://www.postgresql.org/docs/9.2/static/rowtypes.html#AEN7304
but it didn't help.
CREATE TABLE nodes (
id SERIAL NOT NULL PRIMARY KEY,
name TEXT NOT NULL
);
CREATE TYPE pathId AS (
id INTEGER,
node nodes
);
CREATE OR REPLACE FUNCTION test_AEN7304() RETURNS void AS $$
DECLARE
r pathId;
n nodes;
BEGIN
n.name := 'abc';
r.id := 1;
r.node := n; -- All is ok
-- r.node.name := 'def'; -- << Error here
-- (r).node.name := 'def'; -- << and here
((r).node).name := 'def'; -- << and here
END;
$$ LANGUAGE 'plpgsql';
And I can't even make 'n' as ALIAS FOR r.node (to simulate C-like pointer).
What is the right syntax?
Thanks
On Nov 28, 2012, at 5:02 AM, Michael Kolomeitsev <mkolomeitsev@gmail.com> wrote: > Hi, > > I have already read this > http://www.postgresql.org/docs/9.2/static/rowtypes.html#AEN7304 > but it didn't help. > > CREATE TABLE nodes ( > id SERIAL NOT NULL PRIMARY KEY, > name TEXT NOT NULL > ); > > CREATE TYPE pathId AS ( > id INTEGER, > node nodes > ); > > CREATE OR REPLACE FUNCTION test_AEN7304() RETURNS void AS $$ > DECLARE > r pathId; > n nodes; > BEGIN > n.name := 'abc'; > r.id := 1; > r.node := n; -- All is ok > -- r.node.name := 'def'; -- << Error here > -- (r).node.name := 'def'; -- << and here > ((r).node).name := 'def'; -- << and here > END; > $$ LANGUAGE 'plpgsql'; > > And I can't even make 'n' as ALIAS FOR r.node (to simulate C-like pointer). > > What is the right syntax? > Thanks I have verified that plpgsql doesn't allow assignment like r.node.name='def' or (r).node.name or ((r).node).name In Above case, you can use some variable like n and update the n composite variable and assigned it to r.node as you havealready done in plpgsql. Thanks & Regards, Vibhor Kumar EnterpriseDB Corporation The Enterprise PostgreSQL Company Blog:http://vibhork.blogspot.com
Ok.
How do you think should I report this as a bug?
On Nov 28, 2012 10:37 PM, "Vibhor Kumar" <vibhor.kumar@enterprisedb.com> wrote:
On Nov 28, 2012, at 5:02 AM, Michael Kolomeitsev <mkolomeitsev@gmail.com> wrote:
> Hi,
>
> I have already read this
> http://www.postgresql.org/docs/9.2/static/rowtypes.html#AEN7304
> but it didn't help.
>
> CREATE TABLE nodes (
> id SERIAL NOT NULL PRIMARY KEY,
> name TEXT NOT NULL
> );
>
> CREATE TYPE pathId AS (
> id INTEGER,
> node nodes
> );
>
> CREATE OR REPLACE FUNCTION test_AEN7304() RETURNS void AS $$
> DECLARE
> r pathId;
> n nodes;
> BEGIN
> n.name := 'abc';
> r.id := 1;
> r.node := n; -- All is ok
> -- r.node.name := 'def'; -- << Error here
> -- (r).node.name := 'def'; -- << and here
> ((r).node).name := 'def'; -- << and here
> END;
> $$ LANGUAGE 'plpgsql';
>
> And I can't even make 'n' as ALIAS FOR r.node (to simulate C-like pointer).
>
> What is the right syntax?
> Thanks
I have verified that plpgsql doesn't allow assignment like r.node.name='def' or (r).node.name or ((r).node).name
In Above case, you can use some variable like n and update the n composite variable and assigned it to r.node as you have already done in plpgsql.
Thanks & Regards,
Vibhor Kumar
EnterpriseDB Corporation
The Enterprise PostgreSQL Company
Blog:http://vibhork.blogspot.com
Hello Try http://www.postgresql.org/support/submitbug/ bye, -christian- On Wed, 28 Nov 2012 23:51:52 +0700 Michael Kolomeitsev <mkolomeitsev@gmail.com> wrote: > Ok. > How do you think should I report this as a bug? > On Nov 28, 2012 10:37 PM, "Vibhor Kumar" <vibhor.kumar@enterprisedb.com> > wrote: > > > > > On Nov 28, 2012, at 5:02 AM, Michael Kolomeitsev <mkolomeitsev@gmail.com> > > wrote: > > > > > Hi, > > > > > > I have already read this > > > http://www.postgresql.org/docs/9.2/static/rowtypes.html#AEN7304 > > > but it didn't help. > > > > > > CREATE TABLE nodes ( > > > id SERIAL NOT NULL PRIMARY KEY, > > > name TEXT NOT NULL > > > ); > > > > > > CREATE TYPE pathId AS ( > > > id INTEGER, > > > node nodes > > > ); > > > > > > CREATE OR REPLACE FUNCTION test_AEN7304() RETURNS void AS $$ > > > DECLARE > > > r pathId; > > > n nodes; > > > BEGIN > > > n.name := 'abc'; > > > r.id := 1; > > > r.node := n; -- All is ok > > > -- r.node.name := 'def'; -- << Error here > > > -- (r).node.name := 'def'; -- << and here > > > ((r).node).name := 'def'; -- << and here > > > END; > > > $$ LANGUAGE 'plpgsql'; > > > > > > And I can't even make 'n' as ALIAS FOR r.node (to simulate C-like > > pointer). > > > > > > What is the right syntax? > > > Thanks > > > > I have verified that plpgsql doesn't allow assignment like r.node.name='def' > > or (r).node.name or ((r).node).name > > > > In Above case, you can use some variable like n and update the n composite > > variable and assigned it to r.node as you have already done in plpgsql. > > > > Thanks & Regards, > > Vibhor Kumar > > EnterpriseDB Corporation > > The Enterprise PostgreSQL Company > > Blog:http://vibhork.blogspot.com > > > > -- Network Engineering & Design; Content Delivery Platform & IP NETCOLOGNE Gesellschaft für Telekommunikation mbH Am Coloneum 9 | 50829 Köln Tel: 0221 2222-8711 | Fax: 0221 2222-78711 www.netcologne.de Geschäftsführer: Dr. Hans Konle (Sprecher) Dipl.-Ing. Karl-Heinz Zankel HRB 25580, AG Köln Diese Nachricht (inklusive aller Anhänge) ist vertraulich. Sollten Sie diese Nachricht versehentlich erhalten haben, bitten wir, den Absender (durch Antwort-E-Mail) hiervon unverzüglich zu informieren und die Nachricht zu löschen. Die E-Mail darf in diesem Fall weder vervielfältigt noch in anderer Weise verwendet werden.