2011/12/5 Maxim Boguk <maxim.boguk@gmail.com>:
>
>
> On Mon, Dec 5, 2011 at 3:53 PM, Pavel Stehule <pavel.stehule@gmail.com>
> wrote:
>>
>> Hello
>>
>> it work on my pc
>>
>> postgres=# \sf fx
>> CREATE OR REPLACE FUNCTION public.fx()
>> RETURNS SETOF integer
>> LANGUAGE plpgsql
>> AS $function$ declare g int[] = '{20}';
>> begin
>> return next g[1];
>> return;
>> end;
>> $function$
>> postgres=# select fx();
>> fx
>> ----
>> 20
>> (1 row)
>>
>> regards
>>
>> Pavel Stehule
>
>
> Oh sorry.
> Seems I didn't tested simple cases.
>
return next in function that returns composite type needs a composite
variable. Other cases are not supported there.
Regards
Pavel Stehule
> Error happened when you work with record[] types and return setof:
>
> create table test (id serial);
> insert into test select generate_series(1,10);
>
> CREATE OR REPLACE FUNCTION _test_array()
> RETURNS SETOF test
> LANGUAGE plpgsql
> AS $$
> DECLARE
> _array test[];
> _row test%ROWTYPE;
> BEGIN
> SELECT array(SELECT test FROM test) INTO _array;
>
> --work
> --_row := _array[1];
> --RETURN NEXT _row;
>
> --also work
> --RETURN QUERY SELECT (_array[1]).*;
>
> --error
> --RETURN NEXT _array[1];
>
> --error
> --RETURN NEXT (_array[1]);
>
> --error
> --RETURN NEXT (_array[1]).*;
>
> RETURN;
> END;
> $$;
>
>
>
>
>>
>>
>> 2011/12/5 Maxim Boguk <maxim.boguk@gmail.com>:
>> > Some quetions about pl/pgsql and arrays[].
>> >
>> > Is such constructions as:
>> >
>> > RETURN NEXT array[1];
>> >
>> > OR
>> >
>> > SELECT val INTO array[1] FROM ...;
>> >
>> > Should not work?
>> >
>> > At least documentation about RETURN NEXT says:
>> > "RETURN NEXT expression;"
>> >
>> > I think array[1] is a valid expression.
>> >
>> > --
>> > Maxim Boguk
>> > Senior Postgresql DBA.
>
>
>
>
> --
> Maxim Boguk
> Senior Postgresql DBA.
>
> Phone RU: +7 910 405 4718
> Phone AU: +61 45 218 5678
>
> Skype: maxim.boguk
> Jabber: maxim.boguk@gmail.com
>
> LinkedIn profile: http://nz.linkedin.com/in/maximboguk
> If they can send one man to the moon... why can't they send them all?
>
> МойКруг: http://mboguk.moikrug.ru/
> Сила солому ломит, но не все в нашей жизни - солома, да и сила далеко не
> все.