plpgsql functions

On 15/08/2008 20:12, c k wrote:

Hi,
I am getting an error for a function written in plpgsql, as -

CREATE OR REPLACE FUNCTION uf_accgroupbal(date, date, p_company integer)
RETURNS SETOF uf_closingbal AS

<snip>

For functions return SETOF any type, you need to use the following idiom:

...
declare
rec yourtype;
begin
for rec in [your query here...]
loop
return next rec;
end loop;
return;
end;
...

See the docs on control structures in pl/pgsql.

Ray.

------------------------------------------------------------------
Raymond O'Donnell, Director of Music, Galway Cathedral, Ireland
rod@iol.ie
Galway Cathedral Recitals: http://www.galwaycathedral.org/recitals
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On Aug 15, 2008, at 1:47 PM, Raymond O'Donnell wrote:

For functions return SETOF any type, you need to use the following
idiom:

Or, you can use,

RETURN QUERY <your query here>

2008/8/15 c k <shreeseva.learning@gmail.com>:

Hi,
I am getting an error for a function written in plpgsql, as -

CREATE OR REPLACE FUNCTION uf_accgroupbal(date, date, p_company integer)
RETURNS SETOF uf_closingbal AS
$BODY$begin
select accgroups."accgroupid", COALESCE(sum(osc),0) as obc,
COALESCE(sum(osd),0) as obd, COALESCE(sum(csc),0) as sc,
COALESCE(sum(csd),0) as sd, (COALESCE(sum(osc),0)+COALESCE(sum(csc),0)) as
cc, (COALESCE(sum(osd),0)+COALESCE(sum(csd),0)) as cd,
accgroups."localglobal", accgroups."companyid", accgroups."isledgeraccount",
accgroups."accgrouplevel", accgroups."mastergroup", accgroups."accobjectid",
accgroups."accobjecttype", accgroups."againstid" from (accgroups left join
(select * from uf_accgroupob($1)) as accob on
accgroups."accgroupid"=accob."accgroupid") left join (select * from
uf_accgroupcurrentbal($1, $2)) as accgcb2 on accgroups."accgroupid" =
accgcb2."accgroupid" group by accgroups."accgroupid",
accgroups."localglobal", accgroups."companyid", accgroups."isledgeraccount",
accgroups."accgrouplevel", accgroups."mastergroup", accgroups."accobjectid",
accgroups."accobjecttype", accgroups."againstid";
end;
$BODY$
LANGUAGE 'plpgsql' VOLATILE
COST 100
ROWS 1000;
giving me an error when called from another function as 'query has no
destination for result data'.
Why? Please give the details about creating functions having only SELECT
statements using plpgsql?, What points to be remembered?

pl/pgsql isn't SQL/PSM - so there are not allowed one statement
functions. Use SQL language instead.

Regards
Pavel Stehule