What Is Query Store?
Tracy Boggiano, Grant Fritchey · Apress eBooks · 2019
Query Store keeps aggregated data of the queries and statistics for workloads that are run against your SQL Server database when it is enabled. This data can be used to help you establish a baseline for performance, troubleshoot performance issues, and stabilize performance on your database. In this chapter, we go over techniques that were used before Query Store was released, including Profiler/server-side traces, Extended Events, DMVs (Dynamic Management Views), plan guides, and sp_whoisactive . Then, we will look at how and why Query Store is a game changer for doing these activities.