PERFORM statement

On 09/07/2013, at 2:20 PM, Mike Christensen <mike@kitchenpc.com> wrote:

PERFORM MyInsert(1,101,'2013-04-04','2013-04-04',2,'f' );

I get the error:

ERROR: syntax error at or near "PERFORM"
SQL state: 42601
Character: 1

Is the FAQ out of date or was this feature removed? I'm using 9.2.1. Thanks!

I believe PERFORM is a PL/pgSQL construct, not an SQL one. You'd need to execute it inside a function.

Cheers,

Tony

Ah ok that makes sense. The FAQ wasn't exactly clear about that.

On Mon, Jul 8, 2013 at 9:38 PM, Tony Theodore <tony.theodore@gmail.com>wrote:

On 09/07/2013 05:20, Mike Christensen wrote:

I was reading about Postgres stored procs in the FAQ:

https://wiki.postgresql.org/wiki/FAQ#Does_PostgreSQL_have_stored_procedures.3F

It claims that an alternative syntax to:

SELECT theNameOfTheFunction(arg1, arg2);

Is:

PERFORM theNameOfTheFunction(arg1, arg2);

However, when I try the following:

CREATE TABLE app_for_leave
(
sno integer NOT NULL,
eid integer,
ename varchar(20),
sd date,
ed date,
sid integer,
status boolean DEFAULT false,
CONSTRAINT pk_snoa PRIMARY KEY (sno)
);

CREATE FUNCTION MyInsert(_sno integer, _eid integer, _sd date, _ed date,
_sid integer, _status boolean)
RETURNS void AS
$BODY$
BEGIN
INSERT INTO app_for_leave(sno, eid, sd, ed, sid, status)
VALUES(_sno, _eid, _sd, _ed, _sid, _status);
END;
$BODY$
LANGUAGE 'plpgsql' VOLATILE
COST 100;

PERFORM MyInsert(1,101,'2013-04-04','2013-04-04',2,'f' );

I get the error:

ERROR: syntax error at or near "PERFORM"
SQL state: 42601
Character: 1

PERFORM only works inside a pl/pgsql function. You use it when you want
to discard the result of a SELECT. So, for example, instead of this -

select foo from bar ...

- you would do this:

perform foo from bar ...

If you need the result, you would use SELECT INTO <variable>.

Ray.

--
Raymond O'Donnell :: Galway :: Ireland
rod@iol.ie

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