Re: BUG #5867: wish: plpgsql print table for debug

On Thu, Mar 3, 2011 at 1:37 PM, Richard Neill <rjn(at)richardneill(dot)org> wrote:
>
>> Sure it does.  You can pass the tuple to RAISE NOTICE easily enough.
>> It won't have all the same bells and whistles psql would supply, but
>> it prints out well enough for debugging.  Or at least it's never
>> bothered me.
>
> Sorry if I'm being dense, but I can't see how you can pass a tuple; I think
> raise-notice only lets you pass individual strings/integers. But I don't
> think we can pass all of them without specifying in advance how many there
> are....

Pavel had it almost right. Here's a version that works for me.

CREATE FUNCTION debug_query(qry text) RETURNS void
LANGUAGE plpgsql
AS $$
declare
r record;
begin
for r in execute qry loop
raise notice '%', r;
end loop;
end
$$;

And here it is doing its thing:

rhaas=# select debug_query('SELECT * FROM foo');
NOTICE: (1,Richard)
NOTICE: (2,Robert)
NOTICE: (3,Tom)
debug_query
-------------

(1 row)

--
Robert Haas
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