Re: SQL Exists for Flag -- MIDRANGE-L

Subject: Re: SQL Exists for Flag
From: Charles Wilt <charles.wilt@xxxxxxxxx>
Date: Thu, 20 Jun 2013 22:32:07 -0400
List-archive: <http://archive.midrange.com/midrange-l>
List-help: <mailto:midrange-l-request@midrange.com?subject=help>
List-id: Midrange Systems Technical Discussion <midrange-l.midrange.com>
List-post: <mailto:midrange-l@midrange.com>
List-subscribe: <http://lists.midrange.com/mailman/listinfo/midrange-l>, <mailto:midrange-l-request@midrange.com?subject=subscribe>
List-unsubscribe: <http://lists.midrange.com/mailman/listinfo/midrange-l>, <mailto:midrange-l-request@midrange.com?subject=unsubscribe>

You are correct...the LEFT EXCEPTION JOIN is the 4th join shown :)

It also doesn't really get into LEFT vs. RIGHT

Charles

On Thu, Jun 20, 2013 at 3:06 PM, Vern Hamberg <vhamberg@xxxxxxxxxxxxxxx>wrote:

Nice chart. It doesn't quite fit the kinds of JOIN we have, or we use a
different name. We have an EXCEPTION JOIN, which is like that LEFT OUTER
JOIN that excludes the records that don't have a NULL from the 2nd table,
right?

----- Original Message -----
Nice Charles!

On Thu, Jun 20, 2013 at 2:05 PM, Charles Wilt <charles.wilt@xxxxxxxxx

wrote:

http://www.codinghorror.com/blog/2007/10/a-visual-explanation-of-sql-joins.html

Charles

As an Amazon Associate we earn from qualifying purchases.

This mailing list archive is Copyright 1997-2025 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].

Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.