empty arrays

using: psql (PostgreSQL) 7.2.1

why does an empty array return an array of length 1 rather than array of
length 0? one would think that the results below would have returned { }
instead of {0}.

simple test using psql:

# create table test_table ( test_column integer[] );
CREATE
# insert into test_table (test_column) values ( '{ }' );
INSERT 43475 1
# select * from test_table;

test_column
------------
{0}
(1 row)

i want to be able to store a zero-length array field in the database. how do
i specify this with sql?

Regards,

Floyd Shackelford
4 Peaks Technology Group, Inc.
VOICE: 334.735.9428
FAX: 916.404.7125
EMAIL: FloydS(at)4PeaksTech(dot)com
ICQ #: 161371538

Shackelford Motto: ACTA NON VERBA - Actions, not words

Alabama StateMotto: AUDEMUS JURA NOSTRA DEFENDERE - We Dare Defend Our
Rights