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SQL Server 2017 Developer???s Guide

You're reading from   SQL Server 2017 Developer???s Guide A professional guide to designing and developing enterprise database applications

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Product type Paperback
Published in Mar 2018
Publisher Packt
ISBN-13 9781788476195
Length 816 pages
Edition 1st Edition
Languages
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Authors (3):
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Dejan Sarka Dejan Sarka
Author Profile Icon Dejan Sarka
Dejan Sarka
Miloš Radivojević Miloš Radivojević
Author Profile Icon Miloš Radivojević
Miloš Radivojević
William Durkin William Durkin
Author Profile Icon William Durkin
William Durkin
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Toc

Table of Contents (19) Chapters Close

Preface 1. Introduction to SQL Server 2017 FREE CHAPTER 2. Review of SQL Server Features for Developers 3. SQL Server Tools 4. Transact-SQL and Database Engine Enhancements 5. JSON Support in SQL Server 6. Stretch Database 7. Temporal Tables 8. Tightening Security 9. Query Store 10. Columnstore Indexes 11. Introducing SQL Server In-Memory OLTP 12. In-Memory OLTP Improvements in SQL Server 2017 13. Supporting R in SQL Server 14. Data Exploration and Predictive Modeling with R 15. Introducing Python 16. Graph Database 17. Containers and SQL on Linux 18. Other Books You May Enjoy

Automatic tuning in SQL Server 2017


As mentioned, Query Store was introduced in SQL Server 2016 and it is a great tool for identifying regressed queries, especially after the version upgrade. You can use different reports to search for regressed queries or query the appropriate catalog views. However, in production databases, you could have thousands of queries, and if regressed queries are top-consuming queries, you will need time and patience to identify significantly regressed but less frequently executed queries. It would be nice if Query Store did this and created notifications for you, so that you can easily and quickly see all regressed queries in a database. This feature was not available in SQL Server 2016, but SQL Server 2017 brings it in as part of the new Automatic Tuning feature.

Note

In the SQL Server 2016 production environment, I have created notifications on top of Query Store catalog views, in order to quickly identify queries that recently got new execution plan(s) with...

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