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  • Nested Loops Prefetching

    Nested loops join query plans can be a lot more interesting (and complicated!) than is commonly realized. One query plan area I get asked about a lot is prefetching. It is not documented in full detail anywhere, so this seems like a good topic to address in a blog post. The examples used in this article are based on questions asked by Adam ...
    Posted to Paul White: Page Free Space (Weblog) by Paul White on August 30, 2013
  • Optimizing T-SQL queries that change data

    Most tuning efforts for data-changing operations concentrate on the SELECT side of the query plan. Sometimes people will also look at important storage engine considerations like locking and transaction log throughput that can have dramatic effects. As a consequence, a number of common practices have emerged, such as avoiding large numbers of ...
    Posted to Paul White: Page Free Space (Weblog) by Paul White on January 25, 2013
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