From: Peter Kroon [mailto:plakroon@gmail.com]
Sent: Thursday, November 29, 2012 11:01 AM
To: pgsql-general@postgresql.org
Subject: set value var via execute
Is it possible to set the value of a var via execute?
drop table if exists __test;
create unlogged table __test(
id int
);
DO $$
DECLARE
v_holder int;
v_table text = 'table';
v_record_0 text[];
v_id int;
BEGIN
execute '
insert into __test(id)
select id from '||v_table||' order by random() limit 2
';
v_id = (select id from __test limit 1);
--begin this fails------------------------------------------------------------------------------------------
v_holder = execute 'select id from '||v_table||' order by random() limit 1';
--end this fails-------------------------------------------------------------------------------------------
v_record_0 := array(
SELECT id FROM table order by random() --limit 2
);
raise notice '%', v_record_0;
END;
$$ LANGUAGE plpgsql;
Peter,
Instead of:
v_holder = execute 'select id from '||v_table||' order by random() limit 1';
do this:
execute 'select id from '||v_table||' order by random() limit 1' INTO v_holder;
Regards,
Igor Neyman
