WHERE EXISTS(SELECT TOP 1 't' FROM OtherTable O WHERE O.PId = P.Id)ĪND IS NULL OR = '' OR P.NAME_ENG LIKE + '%' OR P. The estimated recompile threshold starts an automatic recompile for the query when the estimated number of indexed column changes have been made to a table by running one of the following statements: UPDATE DELETE MERGE INSERT Specifying KEEP PLAN makes sure a query won't be recompiled as frequently when there are multiple updates to a table. SELECT * OVER (ORDER BY P.Id) AS RowNumber A statement using OPTION (RECOMPILE) creates a new plan and does not cache it. Feedback will also be lost if there is a failover. Feedback is not persisted if the plan is evicted from cache. Prior to SQL Server 2022 (16.x) Preview, changes were not captured in the Query Store. The problem is that I am using this SQL in CTE(Common Table Expression) which don't allow me to put OPTION(RECOMPILE) Memory grant feedback will change only the cached plan. If I comment EXISTS(SELECT TOP 1 't' InnerTable O WHERE O.TId = P.Id) then it will be fast or if I add OPTION(RECOMPILE) then it will be fast. The issue was first fixed in the following cumulative update of SQL Server.WHERE EXISTS(SELECT TOP 1 't' InnerTable O WHERE O.TId = P.Id)ĪND (P.Name_EngLIKE + '%' OR P.PER_NAME_ARB LIKE +'%') This occurs because of an extremely rare timing issue that exists between concurrent compilations. Adding OPTION(RECOMPILE) rebuilds the execution plan every time that your query executes. This problem occurs because the parameter values for the query are changed to incorrect values after you run the query on your connection. Tags : sqlsql-serversql-server-2008compilationquery-hintssql. Important This timing issue is extremely rare. In this scenario, you may receive incorrect results from the procedure that is run on your connection if the following additional conditions are met during the time interval that occurs between the end of query compilation and the start of query execution on your connection:Ĭondition 1: Another concurrent connection makes updates to the joined table that are large enough to trigger another recompilation of the query on your connection.Ĭondition 2: The same query was recompiled from another connection and then put into cache. Your server is under a heavy load that is causing each of these procedures to take more time than usual. The difference between RECOMPILE and WITH RECOMPILE is that RECOMPILE can be added to the stored procedure as a query hint, and only that query within the stored procedure, not all of the queries in the stored procedure, will be recompiled. This procedure is run on multiple concurrent connections that have different sets of parameter values. In SQL Server 2005, a new option if available: the RECOMPILE query hint. Schema changes will still cause a recompile, regardless of options used. A better alternative, on SQL Server 2005 and later, is to use the OPTION (RECOMPILE) query hint on just the statement that suffers from the parameter-sniffing problem. OPTION (KEEPFIXED PLAN) will tell SQL Server to totally disregard statistics changes and keep the same plan whatever happens to data distribution. Using WITH RECOMPILE effectively returns us to SQL Server 2000 behaviour, where the entire stored procedure is recompiled on every execution. It has a WHERE clause that contains parameters. Using OPTION (KEEP PLAN) will tell SQL Server to treat temporary tables the same way as normal tables. It joins a table that is updated very frequently. The procedure contains a query has the following conditions: You run a procedure in Microsoft SQL Server 2014 or SQL Server 2012. It would trigger recompile only when the row. The query does not need to be compiled for every execution unlike OPTION (RECOMPILE). (1) It uses the same row count threshold as other tables. This trace flag differs from OPTION (RECOMPILE) in two main aspects. SQL Server 2014 Developer SQL Server 2014 Developer SQL Server 2014 Enterprise SQL Server 2014 Enterprise SQL Server 2014 Standard SQL Server 2014 Standard SQL Server 2012 Enterprise SQL Server 2012 Developer SQL Server 2012 Express SQL Server 2012 Standard SQL Server 2012 Web SQL Server 2012 Business Intelligence SQL Server 2012 Analysis Services SQL Server 2012 Developer SQL Server 2012 Enterprise SQL Server 2012 Standard More. The trace flag 2453 allows the benefit of query recompile without OPTION (RECOMPILE).
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