What Are Regressed Queries

Query Store analyzes database workload and extracts the 25 most regressed queries according to the chosen metrics. … You can choose between the following metrics: CPU time, Duration, Logical reads, Logical writes, Physical reads, Memory consumption, CLR time, DOP, and Row Count.

What is regressed queries in query store?

The Regressed Queries pane shows you the queries and plans in the query store.

What is purge query data?

When a table row in a database exceeds several hundred or millions of records that are no longer needed, database administrators know it is time to purge. Even though they move the records from a large table to an archive table, the data is not deleted. This process not only frees up space, it also speeds up queries.