Re: Question about functions that return a set of records

Won't I still need a column definition list when I call that since it returns SETOF record?

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@comcast.net> 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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