Query Store notice
If you use the Query Store feature, and you have previously installed Cumulative Update 2 (CU2) (14.0.3008.27), the following requirement applies to you:
After you install Cumulative Update 3 (CU3) (14.0.3015.40) or a later CU, you must immediately run the following script to delete all plans that were collected by Query Store while CU2 was installed:
SET NOCOUNT ON;
DROP TABLE IF EXISTS #tmpUserDBs;
SELECT [database_id], 0 AS [IsDone]
INTO #tmpUserDBs
FROM master.sys.databases
WHERE [database_id] > 4
AND [state] = 0 -- must be ONLINE
AND is_read_only = 0 -- cannot be READ_ONLY
AND [database_id] NOT IN (SELECT dr.database_id FROM sys.dm_hadr_database_replica_states dr -- Except all local Always On secondary replicas
INNER JOIN sys.dm_hadr_availability_replica_states rs ON dr.group_id = rs.group_id
INNER JOIN sys.databases d ON dr.database_id = d.database_id
WHERE rs.role = 2 -- Is Secondary
AND dr.is_local = 1
AND rs.is_local = 1)
DECLARE @userDB sysname;
WHILE (SELECT COUNT([database_id]) FROM #tmpUserDBs WHERE [IsDone] = 0) > 0
BEGIN
SELECT TOP 1 @userDB = DB_NAME([database_id]) FROM #tmpUserDBs WHERE [IsDone] = 0
-- PRINT 'Working on database ' + @userDB
EXEC ('USE [' + @userDB + '];
DECLARE @clearPlan bigint, @clearQry bigint;
IF EXISTS (SELECT [actual_state] FROM sys.database_query_store_options WHERE [actual_state] IN (1,2))
BEGIN
IF EXISTS (SELECT plan_id FROM sys.query_store_plan WHERE engine_version = ''14.0.3008.27'')
BEGIN
DROP TABLE IF EXISTS #tmpclearPlans;
SELECT plan_id, query_id, 0 AS [IsDone]
INTO #tmpclearPlans
FROM sys.query_store_plan WHERE engine_version = ''14.0.3008.27''
WHILE (SELECT COUNT(plan_id) FROM #tmpclearPlans WHERE [IsDone] = 0) > 0
BEGIN
SELECT TOP 1 @clearPlan = plan_id, @clearQry = query_id FROM #tmpclearPlans WHERE [IsDone] = 0
EXECUTE sys.sp_query_store_unforce_plan @clearQry, @clearPlan;
EXECUTE sys.sp_query_store_remove_plan @clearPlan;
UPDATE #tmpclearPlans
SET [IsDone] = 1
WHERE plan_id = @clearPlan AND query_id = @clearQry
END;
PRINT ''- Cleared possibly affected plans in database [' + @userDB + ']''
END
ELSE
BEGIN
PRINT ''- No affected plans in database [' + @userDB + ']''
END
END
ELSE
BEGIN
PRINT ''- Query Store not enabled in database [' + @userDB + ']''
END')
UPDATE #tmpUserDBs
SET [IsDone] = 1
WHERE [database_id] = DB_ID(@userDB)
END
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