Thread

Re: [BUGS] uniqueness not always correct

Vadim Mikheev <vadim@krs.ru> — 1999-11-11T10:07:25Z

Frank Cusack wrote:
> 
> Solaris 2.6/sparc; postgres 6.5.1
> 
> dns=> create table test (zone int4, net cidr, unique(zone, net));
> NOTICE:  CREATE TABLE/UNIQUE will create implicit index 'test_zone_key' for table 'test'
> CREATE
> dns=> insert into test (zone, net) values (1, '1.2.3/24');
> INSERT 21750 1
> dns=> insert into test (zone, net) values (1, '2.3.4/24');
> INSERT 21751 1
> dns=> insert into test (zone, net) values (1, '1.2.3/24');
> INSERT 21752 1
> dns=> insert into test (zone, net) values (1, '2.3.4/24');
> ERROR:  Cannot insert a duplicate key into a unique index

Yes, I reproduced this (Solaris 2.5/sparc). 
Seems like CIDR problem(??!):

ais=> create table test (zone int4, net int4, unique(zone, net));
                                        ^^^^
NOTICE:  CREATE TABLE/UNIQUE will create implicit index 'test_zone_key' for table 'test'
CREATE
ais=> insert into test (zone, net) values (1, 1);
INSERT 7712479 1
ais=> insert into test (zone, net) values (1, 2);
INSERT 7712480 1
ais=> insert into test (zone, net) values (1, 1);
ERROR:  Cannot insert a duplicate key into a unique index

Vadim