The following bug has been logged on the website:
Bug reference: 7831
Logged by: Abel Abraham Camarillo Ojeda
Email address: acam...@verlet.org
PostgreSQL version: 9.1.2
Operating system: OpenBSD-5.1/amd64.MP
Description:
user defined-aggregated don't set initcond to null when unspecified, instead
uses its first argument.
To reproduce:
$
$ cat > /tmp/sql
create or replace function
_foo (state double precision, i double precision)
returns double precision language sql immutable strict as
$$
select 999::double precision;
$$;
create aggregate foo (double precision) (
sfunc = _foo,
stype = double precision
);
select foo(0);
$
$ psql -U postgres template1 < /tmp/sql
CREATE FUNCTION
CREATE AGGREGATE
foo
-----
0
(1 row)
$
$ psql -U postgres template1
psql (9.1.2)
Type "help" for help.
template1=#
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