Re: Which of the two statements do you find is easier to understand?

From: Jared Still <jkstill_at_gmail.com>
Date: Fri, 6 May 2011 11:46:12 -0700
Message-ID: <BANLkTimfORNXpRBcfhnfccXoZEBoB3M-pw_at_mail.gmail.com>

On Fri, May 6, 2011 at 11:08 AM, Rich Jesse < rjoralist2_at_society.servebeer.com> wrote:

> Michael writes:
>
> > Which of the two statements do you find is easier to understand?
> >
> > WHERE (txv.business_unit2tcode NOT IN (41940)
> > OR (txv.business_unit2tcode IN (41940) AND txv.ext_source_key IS
> > NULL));
>
> I'll take what's behind Door #3:
>
> WHERE txv.business_unit2tcode != 41940 OR txv.ext_source_key IS NULL;
>
> Simple, to the point, and logically equivalent to your first WHERE clause.
>
>

Agreed.

One would hope this is SQL that is run infrequently...

Jared Still
Certifiable Oracle DBA and Part Time Perl Evangelist Oracle Blog: http://jkstill.blogspot.com Home Page: http://jaredstill.com

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Received on Fri May 06 2011 - 13:46:12 CDT