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Re: uniqueness not always correct

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Vadim Mikheev <vadim(at)krs(dot)ru>
Cc: Frank Cusack <fcusack(at)iconnet(dot)net>, pgsql-bugs(at)postgreSQL(dot)org, PostgreSQL Developers List <hackers(at)postgreSQL(dot)org>
Subject: Re: uniqueness not always correct
Date: 2000-05-31 23:28:54
Message-ID: 200005312328.TAA04113@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-bugspgsql-hackers
This is Vadim's comment on the bug.


> 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
> 
> ************
> 
> 


-- 
  Bruce Momjian                        |  http://www.op.net/~candle
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 853-3000
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