Stairway Series

Stairway to Columnstore Indexes

Stairway to Columnstore Indexes Level 13: Improvements in SQL Server 2016

  • Stairway Step

This stairway series was started in 2015. As such, the focus was on SQL Server 2012 and SQL Server 2014 only. When SQL Server 2016 was released, with lots of improvements in the columnstore technology, I decided to finish the planned levels with the original focus on SQL Server 2012 and 2014, and add one extra level with a brief overview of the improvements available in SQL Server 2016.

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2020-07-22 (first published: )

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Stairway to Columnstore Indexes

Stairway to Columnstore Indexes Level 12: Clustered or Nonclustered?

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The previous levels of this stairway describe details, features, and limitations of columnstore indexes in SQL Server. But they do not answer what should be the first question for every database professional: should columnstore indexes be used in my databases; on what tables should they be used; and should they be clustered or nonclustered columnstore indexes?

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2021-10-27 (first published: )

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Stairway to Columnstore Indexes

Stairway to Columnstore Indexes Level 11: Optimizing Queries For Batch Mode (Part 2)

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Hugo Kornelis continues his exploration of the types of queries that can end up running in row mode when accessing columnstore indexes. He demonstrates how careful rewriting can often yield a logically equivalent query that runs in batch mode instead, and therefore gains the best possible performance benefit.

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2019-03-26 (first published: )

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