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14 Mar 2017 When the query executes, SQL Server matches the Transact-SQL statement to the plan guide and attaches the OPTION clause to the query at run time or uses the specified query plan. The total number of plan guides you can create is limited only by available system resources.
19 Nov 2008 Problem. My company uses a vendor purchased application to process orders. Lately, one of the vendor's application queries has been running very slowly and is starting to cause problems. My testing has determined that the SQL statement can benefit from a query hint. Is there a way I can apply this query
How to control execution plans with hints, plan guides and so on, and why this is a double-edged sword. • How XML code appears in execution plans. • Advanced topics such as parallelism, forced parameterization and plan forcing. Along the way, I tackle such topics as SQL Server internals, performance tuning, index.
Some people think they know more about how to execute a query than the SQL Server, and they want to boss SQL Server around. SQL Server's plan guide feature lets you influence a query's execution plan without changing the query itself – useful if you need to tune a query without touching it. This part of our SQL Server
SQL Server plan guides allow you to use a particular optimization hint without changing the syntax of the SELECT statement. Learn how.
3 Mar 2010 Forcing Execution Plan Guides. Plan guides don't just force SQL Server to use a specific index; the ambitious DBA can tweak all kinds of things about how the query is executed. You can force things like table scans. The nice thing about plan guides is that you can change them without recompiling your
8 Mar 2017 Ideally, we would like to use a plan guide to add a TABLE HINT , so the guided query becomes: UPDATE JOB_TRIGGERS SET TRIGGER_STATE = @state WHERE JOB_NAME = @jobName AND JOB_GROUP = @jobGroup AND TRIGGER_STATE = @oldState OPTION (TABLE HINT (JOB_TRIGGERS,
To verify that the plan guide is being matched to a query. Start a SQL Server Profiler trace, making certain that the Plan Guide Successful and Plan Guide Unsuccessful event types are selected (located under the Performance node). Find the Plan Guide Successful event for the affected query.
19 Nov 2014 We can force a query to use a specific plan with the help of SQL Server plan guide. We can use sp_create_plan_guide stored procedure to create a plan guide. If you want to drop or disable a plan guide sp_control_plan_guide can help you with. All plan guide details can be listed from sys.plan_guides
31 Mar 2017 I have also read posts about taking the SQL from the plan cache to ensure it matches.However, whatever I try the query does not use the plan guide created, as confirmed by looking at the XML and at the Select Properties in the Execution Plan,and running a DMV to show executed plan guides for the

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March 2018