2013-08-20 14:35 keltezéssel, David E. Wheeler írta:
> On Aug 20, 2013, at 2:31 PM, Pavel Stehule <pavel.stehule@gmail.com> wrote:
>
>> but it works
>>
>> postgres=# do $$begin with x as (select 10) insert into omega select * from x; end;$$;
>> DO
> But this does not:
>
> david=# DO $$
> david$# BEGIN
> david$# PERFORM * FROM (
> david$# WITH inserted AS (
> david$# INSERT INTO foo values (1) RETURNING id
> david$# ) SELECT inserted.id
> david$# ) x;
> david$# END;
> david$# $$;
> ERROR: WITH clause containing a data-modifying statement must be at the top level
> LINE 2: WITH inserted AS (
> ^
> QUERY: SELECT * FROM (
> WITH inserted AS (
> INSERT INTO foo values (1) RETURNING id
> ) SELECT inserted.id
> ) x
> CONTEXT: PL/pgSQL function inline_code_block line 3 at PERFORM
This is the same error as if you put the WITH into a subquery,
which is what PERFORM does.
Proof:
SELECT * FROM ( WITH inserted AS ( INSERT INTO foo values (1) RETURNING id ) SELECT inserted.id
) x;
Best regards,
Zoltán Böszörményi
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Zoltán Böszörményi
Cybertec Schönig & Schönig GmbH
Gröhrmühlgasse 26
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Web: http://www.postgresql-support.de http://www.postgresql.at/
