Lists: | pgsql-general |
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From: | Richard Emberson <emberson(at)phc(dot)net> |
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To: | pgsql-general(at)postgresql(dot)org |
Subject: | PL/pgsql return resultset/cursor? |
Date: | 2002-03-23 01:14:07 |
Message-ID: | 3C9BD6DF.E5EF582E@phc.net |
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Lists: | pgsql-general |
Is it possible to return a result-set or cursor from a PL/pgsql
procedure, like
CREATE OR REPLACE FUNCTION foo()
RETURNS <WHAT_TYPE> AS '
BEGIN
RETURN SELECT * from FOO;
END;
' LANGUAGE 'plpgsql';
If you open a cursor in a procedure, it gets closed when the procedure
exits, right?
Richard
From: | Jan Wieck <janwieck(at)yahoo(dot)com> |
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To: | Richard Emberson <emberson(at)phc(dot)net> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: PL/pgsql return resultset/cursor? |
Date: | 2002-03-23 10:54:11 |
Message-ID: | 200203231054.g2NAsB217580@saturn.janwieck.net |
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Lists: | pgsql-general |
Richard Emberson wrote:
>
> Is it possible to return a result-set or cursor from a PL/pgsql
> procedure, like
>
> CREATE OR REPLACE FUNCTION foo()
> RETURNS <WHAT_TYPE> AS '
> BEGIN
> RETURN SELECT * from FOO;
> END;
> ' LANGUAGE 'plpgsql';
>
> If you open a cursor in a procedure, it gets closed when the procedure
> exits, right?
Cursors get closed in PostgreSQL when you close them or when
the transaction ends.
Look at the refcursor data type (new in v7.2) and use
transactions.
Jan
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From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
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To: | Jan Wieck <janwieck(at)yahoo(dot)com> |
Cc: | Richard Emberson <emberson(at)phc(dot)net>, pgsql-general(at)postgresql(dot)org |
Subject: | Re: PL/pgsql return resultset/cursor? |
Date: | 2002-03-23 14:38:18 |
Message-ID: | 200203231438.g2NEcIK16492@candle.pha.pa.us |
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Lists: | pgsql-general |
Jan Wieck wrote:
> Richard Emberson wrote:
> >
> > Is it possible to return a result-set or cursor from a PL/pgsql
> > procedure, like
> >
> > CREATE OR REPLACE FUNCTION foo()
> > RETURNS <WHAT_TYPE> AS '
> > BEGIN
> > RETURN SELECT * from FOO;
> > END;
> > ' LANGUAGE 'plpgsql';
> >
> > If you open a cursor in a procedure, it gets closed when the procedure
> > exits, right?
>
> Cursors get closed in PostgreSQL when you close them or when
> the transaction ends.
>
> Look at the refcursor data type (new in v7.2) and use
> transactions.
Here is a sample:
create table aa(a int, b int, c int);
create function f() returns refcursor as '
declare
r refcursor;
begin
open r for select * from aa;
return r;
end;' language 'plpgsql';
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 853-3000
+ If your life is a hard drive, | 830 Blythe Avenue
+ Christ can be your backup. | Drexel Hill, Pennsylvania 19026
From: | "Gyorgy Molnar" <yuri(at)powercom(dot)com(dot)sg> |
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To: | <pgsql-general(at)postgresql(dot)org> |
Subject: | PL/pgsql return more than one values |
Date: | 2002-03-26 20:32:54 |
Message-ID: | 003801c1d505$6c023000$9b01a8c0@dell8100 |
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Lists: | pgsql-general |
Does anyone know how to return more than one value from pgsql script?
In the archieve I've found some email about it. Somebody suggested to create
a temporary table?
Could any one make a small smaple script for me? I have postgesql 7.1.
Kind Regards,
Yuri