and a.lname=b.lname
and a.sn <> b.sn
Regards,
Jayadevan
From: zach cruise <zachc1980@xxxxxxxxx>
To: pgsql-general@xxxxxxxxxxxxxx
Date: 01/29/2010 10:09 PM
Subject: how to look for duplicate rows?
Sent by: pgsql-general-owner@xxxxxxxxxxxxxx
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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