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Parallel Execution Plans Suck
Summary: A deep dive into SQL Server parallelism, and a potential performance problem with parallel plans that use TOP. There was an interesting question asked by Mark Storey-Smith on dba.stackexchange.com back in October 2011. He was looking at the execution plan for a query that counts a million rows from a virtual auxiliary table of ...
Paul White: Page Free Space
May 2, 2012
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