Comments on: Different Performance from Standard Edition and Enterprise Edition? 4 http://hoopercharles.wordpress.com/2010/11/24/different-performance-from-standard-edition-and-enterprise-edition-4/ Miscellaneous Random Oracle Topics: Stop, Think, ... Understand Mon, 13 May 2013 14:10:06 +0000 hourly 1 http://wordpress.com/ By: Charles Hooper http://hoopercharles.wordpress.com/2010/11/24/different-performance-from-standard-edition-and-enterprise-edition-4/#comment-2159 Thu, 25 Nov 2010 15:20:57 +0000 http://hoopercharles.wordpress.com/?p=3686#comment-2159 For those who were blurry eyed before reaching the bottom of the page, take a very close look at the TKPROF output for the second to the last SQL statement (identified as “For all parts, determine the number of purchase order line exceptions where a part was purchase from a vendor other than the preferred vendor”). The number of rows returned by each database is different! That is possibly the most scary part of this blog article.

Also, take a look at the execution plan for the query identified as “Comparing the most recent vendor for each part with the expected vendor for each purchased part that has either an OFFICE or SHOP product code” When comparing the number of rows returned by the WINDOW SORT PUSHED RANK operation, notice that a significantly greater number of rows are returned by 11.2.0.1 – might this explain the significant increase in the number of physical block reads?

There are some other interesting results in the output, but I will let someone else identify those.

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