How to retrieve the Query Store ID of a Session ID in SQL Server?

 

The Query Store is a feature in SQL Server that collects and stores information about queries that are executed. This information can be used to troubleshoot performance problems, identify queries that are causing problems, and optimize queries for performance.

To retrieve the Query Store ID of a Session ID, we can use the following SQL code:

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SELECT qs.query_id
	, s.session_id
FROM sys.query_store_query qs
    JOIN sys.dm_exec_requests r ON qs.query_hash = r.query_hash
    JOIN sys.dm_exec_sessions s ON r.session_id = s.session_id
WHERE s.session_id = 'session_id'

This code will first join the sys.query_store_query table with the sys.dm_exec_requests table to get the Query Store ID for the given Session ID. Then, it will join the sys.dm_exec_sessions table to get the Session ID. Finally, it will filter the results to only return the rows where the Session ID matches the given Session ID.

You can then use the Query Store ID to retrieve more information about the query, such as the query text, execution plan, and runtime statistics.

Benefits of using the Query Store

The Query Store offers a number of benefits, including:

• Performance troubleshooting: The Query Store can be used to troubleshoot performance problems by identifying queries that are causing problems and providing detailed information about how those queries are executing.
• Query optimization: The Query Store can be used to identify queries that can be optimized for performance. For example, the Query Store can identify queries that are using inefficient execution plans or that are consuming a lot of resources.
• Historical query analysis: The Query Store can be used to analyze historical query trends and patterns. This information can be used to identify areas where the database can be improved, such as by adding more indexes or by creating materialized views.

The Query Store is a powerful tool that can be used to improve the performance and reliability of SQL Server databases. By retrieving the Query Store ID of a Session ID, you can access more detailed information about the queries that are executing on your database. This information can be used to troubleshoot performance problems, identify queries that can be optimized, and analyze historical query trends and patterns.