Which syntax is used to recompile a procedure?

Which syntax is used to recompile a procedure?

Alter Procedure is used to recompile a procedure. The ALTER PROCEDURE statement is very similar to the ALTER FUNCTION statement. The ALTER PROCEDURE statement explicitly recompiles a standalone stored procedure.

What does Option recompile do?

OPTION(RECOMPILE) tells the server not to cache the pan for given query. This means that another execution of the same query will require to elaborate a new(maybe different) plan. This is used in the queries with parameters to prevent parameter sniffing issue.

What is SP statement?

A SQL stored procedure (SP) is a collection SQL statements and sql command logic, which is compiled and stored on the database. The main purpose of stored procedures to hide direct SQL queries from the code and improve performance of database operations such as select, update, and delete data.

What causes stored procedure to recompile?

There are multiple reasons why a recompilation can occur. A recompile of an execution plan could be due to database level configuration changes, schema changes, index changes, etc. The following query shows the different recompilation reasons. This was executed in SQL Server 2017 Developer Edition.

Does alter procedure force recompile?

ALTER will also force a recompile of the entire procedure. Statement level recompile applies to statements inside procedures, eg. a single SELECT, that are recompiled because the underlying tables changes, w/o any change to the procedure.

When should I use option recompile?

Using WITH RECOMPILE effectively returns us to SQL Server 2000 behaviour, where the entire stored procedure is recompiled on every execution. 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.

What is SP in database?

A stored procedure (also termed proc, storp, sproc, StoPro, StoredProc, StoreProc, sp, or SP) is a subroutine available to applications that access a relational database management system (RDBMS). Such procedures are stored in the database data dictionary.

Why use stored procedures?

A stored procedure provides an important layer of security between the user interface and the database. It supports security through data access controls because end users may enter or change data, but do not write procedures. It improves productivity because statements in a stored procedure only must be written once.

What is the command used to recompile the stored procedure at run time?

If you want your stored procedure to always recompile at run time, you can add the keyword RECOMPILE when you create the stored procedure. Additionally, if the stored procedure has to be recompiled at only one time, in that case, you can add RECOMPILE word one time only and run the SP as well.

What is the use of recompile in SQL Server?

RECOMPILE – specifies that after the query is executed, its query execution plan stored in cache is removed from cache. When the same query is executed again, there will be no existing plan in cache, so the query will have to be recompiled.

When to use a recompile in SQL Server?

SQL Server can create plans for those temporary tables when one of them is referenced for the first time. This recompile will still take place during the execution of the stored procedure, but you have cut down of the recompiles from n to two (one for the stored procedure and one when the first reference to a temporary table is made).

When to use recompile hints and execution plan caching?

Using RECOMPILE in the stored procedure header is pretty drastic — the procedure won’t cache an execution plan when it runs. This means: Wow, that’s a bummer. If you need to identify the impact this procedure is having on your server, you have to run some sort of trace or extended events session and harvest and interpret the results.

How to determine the statement causing the recompile?

To determine the statement causing the recompile look at the statement immediately before and after the recompile if you included SP:StmtStarting and SP:StmtCompleted in your trace.

When to use recompile in the procedure header?

The option most folks discover first is to use ‘WITH RECOMPILE’ in the header of the stored procedure, like this: Using RECOMPILE in the stored procedure header is pretty drastic — the procedure won’t cache an execution plan when it runs.