Re: Function Syntax Help

Thanks Brian, I changed it to this:

CREATE FUNCTION gen_simultaneous_calls(mystart timestamp, mystop timestamp) RETURNS VOID AS $$
DECLARE
mycount integer;
BEGIN
WHILE mystart < mystop + INTERVAL '1 day' LOOP
SELECT INTO mycount count(*) FROM log_calls WHERE startdate < mystart and enddate > mystop;
INSERT INTO simultaneous_calls_rpt (startdate,call_count) VALUES (mystart,mycount);
mystart := mystart + INTERVAL '1 minute';
mystop := mystop + INTERVAL '1 minute';
END LOOP;
END;
$$ LANGUAGE 'plpgsql' STABLE;

But now am getting a different error:

[postgres(at)linux1559 ~]$ cat gen_simultaneous_calls.sql | psql holly
ERROR: "$1" is declared CONSTANT
CONTEXT: compilation of PL/pgSQL function "gen_simultaneous_calls" near line 7

From: epailty(at)googlemail(dot)com [mailto:epailty(at)googlemail(dot)com] On Behalf Of Brian Modra
Sent: Friday, October 30, 2009 2:29 PM
To: Plugge, Joe R.
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: [SQL] Function Syntax Help

2009/10/30 Plugge, Joe R. <JRPlugge(at)west(dot)com<mailto:JRPlugge(at)west(dot)com>>
I am trying to create a function that will grind through a cdr table and populate another table. I am trying to load the function and am getting the following error:

ERROR: function result type must be specified

CREATE FUNCTION gen_simultaneous_calls(mystart timestamp, mystop timestamp) AS $$ DECLARE

you need to tell it the return type. If there is none, "returns void"

e.g.
CREATE FUNCTION gen_simultaneous_calls(mystart timestamp, mystop timestamp) returns void AS $$

mycount integer;

BEGIN

WHILE mystart < mystop + INTERVAL '1 day' LOOP

SELECT INTO mycount count(*) FROM log_calls WHERE startdate < mystart and enddate > mystop;

INSERT INTO simultaneous_calls_rpt (startdate,call_count) VALUES (mystart,mycount);

mystart := mystart + INTERVAL '1 minute';

mystop := mystop + INTERVAL '1 minute';

END LOOP;

END;

$$ LANGUAGE 'plpgsql' STABLE;

Joe R. Plugge
Database Administrator, West Interactive Corporation
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