Hi friends, in this article, we’ll be discussing about Query Store Enhancements in SQL Server 2022. Note that this lecture, is part of my online course on Udemy, titled: “SQL Server 2022: What’s New – New and Enhanced Features“.
About Query Store in SQL Server
Query Store, is feature that was originally shipped with SQL Server 2016.
Its primary purpose, is to collect usage and performance data for various SQL Server objects, such as: queries, plans, runtime statistics, etc.
You can then use this data, for easily identifying performance bottlenecks and conduct performance-related troubleshooting.
Note that up to SQL Server 2019, Query Store was turned off by default for new databases.,
Query Store in SQL Server 2022 and Query Store Hints
In SQL Server 2022, Query Store functionality has been extended to also support secondary replicas just like it supports primary replicas.
Moreover, Query Store, it is now enabled by default for every new database that is created in SQL Server 2022.
In addition to the above, you can now use Query Store hints.
The main characteristics of these hints are:
- You can shape query execution plans without changing application code
- Can be used via the OPTION clause
- Requires that Query Store is enabled
Based on all the above, we can see that Query Store hints, allow the Database Administrator and Developer, to tune the application’s database performance directly on the database-level, without having the application’s code. This is a significant new enhancement in SQL Server 2022.
Procedure for Using Query Store Hints in SQL Server 2022
The procedure for using Query Store Hints in SQL Server is quite simple and consists of two steps:
- Step 1: Identify the query_id in Query Store for which you want to set the hint
- Step 2: Execute the sys.sp_query_store_set_hints system stored procedure, along with specifying the query id and hint name
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Via the course, you will learn all about the new features and enhancements in SQL Server 2022, via a rich set of high-quality lectures, infographics and step-by-step live demonstrations.
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Artemakis Artemiou, a distinguished Senior Database and Software Architect, brings over 20 years of expertise to the IT industry. A Certified Database, Cloud, and AI professional, he earned the Microsoft Data Platform MVP title for nine consecutive years (2009-2018). As the founder of SQLNetHub and GnoelixiAI Hub, Artemakis is dedicated to sharing his knowledge and democratizing education on various fields such as: Databases, Cloud, AI, and Software Development. His commitment to simplicity and knowledge sharing defines his impactful presence in the tech community.