Re: how to look for duplicate rows?
select distinct a.* from test a, test b where a.fname = b.fname
and a.lname=b.lname
and a.sn <> b.sn
Regards,
Jayadevan
From: zach cruise <zachc1980@gmail.com>
To: pgsql-general@postgresql.org
Date: 01/29/2010 10:09 PM
Subject: [GENERAL] how to look for duplicate rows?
Sent by: pgsql-general-owner@postgresql.org
i have to clean a table that looks like so:
create table test (sn integer, fname varchar(10), lname varchar(10));
insert into test values (1, 'adam', 'lambert');
insert into test values (2, 'john', 'mayer');
insert into test values (3, 'john', 'mayer');
insert into test values (4, 'mary', 'kay');
insert into test values (5, 'john', 'mayer');
insert into test values (6, 'susan', 'boyle');
insert into test values (7, 'susan', 'boyle');
insert into test values (8, 'mark', 'ingram');
for that, i need to run a query that returns like so:
result:
is_not_distinct
2, 3, 5
6, 7
using 8.1.
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and a.lname=b.lname
and a.sn <> b.sn
Regards,
Jayadevan
From: zach cruise <zachc1980@gmail.com>
To: pgsql-general@postgresql.org
Date: 01/29/2010 10:09 PM
Subject: [GENERAL] how to look for duplicate rows?
Sent by: pgsql-general-owner@postgresql.org
i have to clean a table that looks like so:
create table test (sn integer, fname varchar(10), lname varchar(10));
insert into test values (1, 'adam', 'lambert');
insert into test values (2, 'john', 'mayer');
insert into test values (3, 'john', 'mayer');
insert into test values (4, 'mary', 'kay');
insert into test values (5, 'john', 'mayer');
insert into test values (6, 'susan', 'boyle');
insert into test values (7, 'susan', 'boyle');
insert into test values (8, 'mark', 'ingram');
for that, i need to run a query that returns like so:
result:
is_not_distinct
2, 3, 5
6, 7
using 8.1.
--
Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general
DISCLAIMER:
"The information in this e-mail and any attachment is intended only for the person to whom it is addressed and may contain confidential and/or privileged material. If you have received this e-mail in error, kindly contact the sender and destroy all copies of the original communication. IBS makes no warranty, express or implied, nor guarantees the accuracy, adequacy or completeness of the information contained in this email or any attachment and is not liable for any errors, defects, omissions, viruses or for resultant loss or damage, if any, direct or indirect."
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