Search Postgresql Archives

Question About UNION

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

To: pgsql-general@xxxxxxxxxxxxxx
Subject: Question About UNION
From: Bill Thoen <bthoen@xxxxxxxxxx>
Date: Thu, 09 Oct 2008 10:36:27 -0600
User-agent: Thunderbird 1.5.0.12 (X11/20070530)

I'm trying to combine two tables, but I only want unique records basedon the first two columns. Can UNION be used to join three-column tablesbut only include records based on the uniqueness of the first twocolumns? If not, how would I do this with PostgreSQL 8.1?

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Follow-Ups:
- Re: Question About UNION
  - From: Raymond O'Donnell

Prev by Date: Re: Re: [Pkg-postgresql-public] Postgres major version support policy on Debian
Next by Date: Re: Re: [Pkg-postgresql-public] Postgres major version support policy on Debian
Previous by thread: databases list to file
Next by thread: Re: Question About UNION
Index(es):
- Date
- Thread

[Index of Archives] [Postgresql Jobs] [Postgresql Admin] [Postgresql Performance] [Linux Clusters] [PHP Home] [PHP on Windows] [Kernel Newbies] [PHP Classes] [PHP Books] [PHP Databases] [Postgresql & PHP] [Yosemite]

Powered by Linux