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  • Updated File & Wait Statistics Procedures

              For many years I have been using a set of stored procedures to capture and report on both the file and wait statistics inside of SQL Server and I just recently did some minor modifications that I want others to be aware of. Since many of you have received copies of the past revisions ...
    Posted to Andrew Kelly (Weblog) by Andrew Kelly on February 13, 2014
  • Is Distinct Aggregation Still Considered Harmful?

    Back in 2008, Marc Friedman of the SQL Server Query Processor Team wrote a blog entry entitled “Distinct Aggregation Considered Harmful”, in which he shows a way to work around the poor performance that often results simply from adding the keyword DISTINCT to an otherwise perfectly reasonable aggregate function in a query.  This post is an ...
    Posted to Paul White: Page Free Space (Weblog) by Paul White on December 3, 2011
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