Comments on: Functional difference between “NOT IN” vs “NOT EXISTS” clauses http://decipherinfosys.wordpress.com/2007/01/21/32/ Mon, 14 Dec 2009 05:18:20 +0000 http://wordpress.com/ hourly 1 By: IN vs. EXISTS vs. JOIN : Sean Holtshousen – Developer Blog http://decipherinfosys.wordpress.com/2007/01/21/32/#comment-5425 IN vs. EXISTS vs. JOIN : Sean Holtshousen – Developer Blog Wed, 04 Nov 2009 13:09:05 +0000 http://decipherinfosys.wordpress.com/2007/01/21/32/#comment-5425 [...] in one scenario – read this post for the differences between NOT IN and NOT EXISTS clauses : http://decipherinfosys.wordpress.com/2007/01/21/32/ ). However, there are performance implications of using one over the other that one needs to be [...] [...] in one scenario – read this post for the differences between NOT IN and NOT EXISTS clauses : http://decipherinfosys.wordpress.com/2007/01/21/32/ ). However, there are performance implications of using one over the other that one needs to be [...]

]]> By: workarounds for mysql NOT IN and NOT EXISTS information « Coral's Blog http://decipherinfosys.wordpress.com/2007/01/21/32/#comment-4990 workarounds for mysql NOT IN and NOT EXISTS information « Coral's Blog Thu, 18 Jun 2009 13:23:41 +0000 http://decipherinfosys.wordpress.com/2007/01/21/32/#comment-4990 [...] It also seems that NOT IN is inclined to do full table scans on the subquery where as NOT EXISTS can use an index which means that but NOT EXISTS has better performance.. More information on the difference here. [...] [...] It also seems that NOT IN is inclined to do full table scans on the subquery where as NOT EXISTS can use an index which means that but NOT EXISTS has better performance.. More information on the difference here. [...]

]]> By: IN vs EXISTS « Systems Engineering and RDBMS http://decipherinfosys.wordpress.com/2007/01/21/32/#comment-3 IN vs EXISTS « Systems Engineering and RDBMS Tue, 30 Jan 2007 16:56:02 +0000 http://decipherinfosys.wordpress.com/2007/01/21/32/#comment-3 [...] in one scenario - read this post for the differences between NOT IN and NOT EXISTS clauses : http://decipherinfosys.wordpress.com/2007/01/21/32/ ). However, there are performance implications of using one over the other that one needs to be [...] [...] in one scenario – read this post for the differences between NOT IN and NOT EXISTS clauses : http://decipherinfosys.wordpress.com/2007/01/21/32/ ). However, there are performance implications of using one over the other that one needs to be [...]

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