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3 ways to recompile stored procedures

Requirement for Recompilation : 

When we create and execute a procedure it will compiled and create execution plan for the present state of the database . If we do changes into database structure, we should recompiling a procedure updates and optimizes the procedure’s query plan for those changes. This can improve the procedure’s processing performance.

Another reason to stress a procedure to recompile is to retro-act the "parameter sniffing". When SQL Server executes procedures, any parameter values that are used by the procedure when it compiles are connected as part of generating the query plan.

SQL Server also do automatic recompiling of procedure whenever Server is restarted.

3 ways to recompile manually :

1.) Directly writing in procedure.
2.) During execution of procedure.
3.) Ad-hoc manner from query prompt.

Directly writing in procedure.

Create PROCEDURE [dbo].[upTitle_Select]
@TitleID int = NULL,
@Title varchar(5) = NULL
DECLARE @ErrorCode int;
SELECT @ErrorCode = @@ERROR;

During execution of procedure
exec upTitle_Select 230, 'just Test' WITH RECOMPILE

Ad-hoc manner for query prompt.
sp_recompile 'upTitle_Select'


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