How do you clean a query store?

How do you clean a query store?

Verify that Query Store collects query data continuously

1. Increase the maximum storage size by using the MAX_STORAGE_SIZE_MB option of ALTER DATABASE.
2. Clean up Query Store data by using the following statement: SQL Copy. ALTER DATABASE [QueryStoreDB] SET QUERY_STORE CLEAR;

How do I enable SQL query store?

Enabling the Query Store

1. In Object Explorer, right-click a database, and then select Properties. Requires at least version 16 of Management Studio.
2. In the Database Properties dialog box, select the Query Store page.
3. In the Operation Mode (Requested) box, select Read Write.

Is there a way to manually clear the query store?

The MS Docs article Best Practice with the Query Store has a section on this titled “ Keep the most relevant data in Query Store. ” Rather than manually clearing all the data, there are two main options trimming the data here.

How to remove one query plan from cache?

Remove one query plan from the cache Note that neither DBCC DROPCLEANBUFFERS; nor DBCC FREEPROCCACHE; is supported in SQL Azure / SQL Data Warehouse.

What happens when query store exceeds storage size?

This interval is set by the Data Flush Interval (Minutes) option. If Query Store has breached the maximum size limit between storage size checks, it transitions to read-only mode. If Size Based Cleanup Mode is enabled, the cleanup mechanism to enforce the maximum size limit is also triggered.

How does automated cleanup work in query store?

There are actually two kinds of automated cleanup inside the Query Store. First, you have a time-based cleanup. By default it keeps queries that have been accessed within the last 30 days. Anything older, it tosses. If you have the stale_query_threshold_days (all in sys.database_query_store_options) set to 0, it disables the time-based cleanup.