sp_query_store_remove_plan (Transact-SQL)
Applies to: 
SQL Server 2016 (13.x) and later
Azure SQL Database
Azure SQL Managed Instance
Removes a single plan from the Query Store.
Transact-SQL syntax conventions
Syntax
sp_query_store_remove_plan [ @plan_id = ] plan_id
[ ; ]
Arguments
[ @plan_id = ] plan_id
The ID of the query plan to be removed. @plan_id is bigint, with no default.
Return code values
0 (success) or 1 (failure).
Permissions
Requires the ALTER permission on the database.
Examples
The following example returns information about the queries in the Query Store.
SELECT txt.query_text_id,
txt.query_sql_text,
pl.plan_id,
qry.*
FROM sys.query_store_plan AS pl
INNER JOIN sys.query_store_query AS qry
ON pl.query_id = qry.query_id
INNER JOIN sys.query_store_query_text AS txt
ON qry.query_text_id = txt.query_text_id;
After you identify the plan_id that you want to delete, use the following example to delete a query plan.
EXEC sp_query_store_remove_plan 3;