You're reading from SQL Server Query Tuning and Optimization

Product typeBook

Published inAug 2022

PublisherPackt

ISBN-139781803242620

Edition1st Edition

Concepts

Databases

Author (1)

Benjamin Nevarez

Summary

This chapter covered the Query Store, a query performance troubleshooting feature that collects information about queries, plans, and runtime statistics and can be used to find performance differences due to execution plan changes.

New with SQL Server 2022, the Query Store can be used to implement query hints and can be enabled on secondary replicas. Query store hints can be used to change the behavior of a query without the need to change the query’s text. The Query Store can be enabled on secondary replicas used by Always On availability groups. This can help in scenarios where you want to troubleshoot query performance on read-only workloads running on such secondary replicas.

Finally, as covered in the next chapter, the Query Store plays a very important role in the new intelligent query processing features that are available. This is because it is required by the memory grant feedback, cardinality estimation feedback, and degree of parallelism feedback features...

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SQL Server Query Tuning and Optimization

Published in: Aug 2022Publisher: PacktISBN-13: 9781803242620

Author (1)

Benjamin Nevarez

Benjamin Nevarez is a database professional based in Los Angeles, California who specializes in SQL Server query tuning and optimization. He is the author of several books including “High Performance SQL Server'', “SQL Server 2017 on Linux”, “SQL Server 2014 Query Tuning & Optimization” and “Inside the SQL Server Query Optimizer” and has also co-authored other books such as “SQL Server 2012 Internals”. Benjamin has also been a speaker at many SQL Server conferences around the world
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