February 2024
Intermediate to advanced
456 pages
11h 28m
English
Content preview from Learn T-SQL Querying - Second Edition
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12
Managing Optimizer Changes
In this chapter, we will discuss how users can manage Query Optimizer changes throughout versions of the SQL Database Engine. We will cover a client-side feature in SQL Server Management Studio (SSMS) – the Query Tuning Assistant (QTA) – and a new feature for the SQL Server 2022 release – CE Feedback. Both features aim at addressing some of the most common causes of cardinality estimation (CE)-related performance regressions that may affect our T-SQL queries after an upgrade from an older version of SQL Server to a newer version, namely SQL Server 2016 and above.
At the time of writing, SQL Server 2014 is months away from completing its 10-year life cycle and reaching end of support. Also, SQL Server 2016 and SQL ...
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