Nevermind. I figured it out, you just do this:
CREATE TYPE notification AS (UserId uuid, Data text);
CREATE FUNCTION Foo(_userid uuid)
RETURNS SETOF notification AS
$BODY$
BEGIN
RETURN QUERY
select n.UserId as UserId, n.data as Data from subscriptions
s
inner join notifications n on n.userid = s.userid
inner join users u on u.userid = s.userid
where s.subscriberid=_userid
order by n.date desc;
END;
$BODY$
LANGUAGE 'plpgsql' VOLATILE
COST 100
ROWS 10;
Works great when calling it in Npgsql as well, it just figures out the
composite type is a DataRow.
Sweet!
Mike
Asko Oja wrote:
CREATE FUNCTION func(
i_users text[],
OUT username text,
OUT update_time timestamp with time zone
) RETURNS SETOF record AS
$_$
select f.username , f.update_time
from tbl f
where f.username = ANY ($1);
$_$
LANGUAGE sql SECURITY DEFINER;
On Fri, Feb 20, 2009 at 8:50 AM, Mike
Christensen <imaudi@xxxxxxxxxxx>
wrote:
I
have the following function:
CREATE FUNCTION foo(_userid uuid)
RETURNS SETOF record AS
$BODY$
BEGIN
RETURN QUERY
select n.UserId, u.Alias, n.Date, n.Data
--Bunch of joins, etc
If I understand correctly, I have to return "SETOF record" since my
result set doesn't match a table and isn't a single value. However,
this means when I want to call it I have to provide a column definition
list, such as:
select * from foo as (...);
Is there any way to specify this column list within the function
itself? The problem I'm running into is I want to call this function
using Npgsql which doesn't appear to support passing in a column
definition list.
One idea is to use a view and then have the function select * from the
view and apply the where clause. However, I'm not sure if this would
be as performant since views may not be indexed (dunno if this is true
or not)..
Any other ideas would be appreciated.. Thanks!
Mike
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