From: Gerardo Herzig <gherzig@fmed.uba.ar>
To: pgsql-sql@postgresql.org
Subject: puzzled by SELECT INTO
Date: Tue, 30 Oct 2007 17:43:03 -0300
Message-ID: <47279757.50602@fmed.uba.ar> (raw)
Hi all. Im having some trouble here that cannot understand.
Consider this function:
CREATE OR REPLACE FUNCTION read_words(bigint, varchar)
returns varchar
as
$$
declare
returnValue varchar ;
BEGIN
select * into returnValue from array_to_string(array(select word
from words where page_id=$1 and word_position in ($2)), ' ');
return returnValue;
END;
$$ language plpgsql;
So far, so good. But...
select * from read_words(99466::bigint, '2994,2995,2996');
read_words
------------
(1 row)
But...if i do a
select * from array_to_string(array(select word from words where
page_id=99466 and word_position in (2994,2995,2996)), ' ')
array_to_string
-----------------------------
man page inside
Means that the query itself seems OK, but something in the SELECT INTO
thing is not working to me.
Mmmm...i guess is not that. I just make the sql version of that function
CREATE OR REPLACE FUNCTION read_words(bigint, varchar)
returns varchar
as
$$
select * from array_to_string(array(select word from words where
page_id=$1 and word_position in ($2)), ' ');
$$
language sql;
with the same (NULL) results....Looks like im having some mistake near
'and word_position in ($2)...'
Wreird enough to me, need some advice plz!
Thanks!
Gerardo
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Subject: Re: puzzled by SELECT INTO
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