Comments on: How to write a SQL exclusion join

By: Timi

Timi — Sun, 09 Sep 2012 06:36:57 +0000

Been battling with inserting data across many tables in one query in which different conditions should be checked before inserts are considered with a complete collection of datasets for example, CHECK TABLE ONE IF DATA ONE EXISTS IF YES IGNORE THE DATA AND CHECK IF A COMBINATION OF DATA ONE AND DATA TWO EXITS IN TABLE TWO IF YES IGNORE AND CHECK IF A COMBINATION OF DATA ONE, TWO AND THREE EXIST IN TABLE THREE…etc

By: E. Serrano

E. Serrano — Sat, 23 Jun 2012 21:09:26 +0000

I had exactly the same problem excluding results from a JOIN, and this comprehensive explanation perfectly fixed the issue. The subquery was the solution – and the whole query isn’t so slow after all. Thank you for sharing this!

By: abc

abc — Sat, 28 May 2011 09:56:11 +0000

Thanks a lot! New to SQL and DB, and this is a very useful and well-written article.

By: Shino

Shino — Tue, 06 Apr 2010 06:26:39 +0000

May i know how to write the outer-join between table R (A,B) and S (B,C) in SQL without using the outerjoin syntax?

By: Liv Detrick

Liv Detrick — Thu, 17 Sep 2009 17:29:49 +0000

Thanks!