Here is the script to create my demo database: USE ĬONTAINMENT = NONE ON PRIMARY ( NAME = N'Nativel圜ompiledSPDemo_Data', FILENAME = N'C:\MSSQL\DATA\Nativel圜ompiledSPDemo_Data.mdf' ,
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In order to show you how to create a natively compiled stored procedure that uses an In-Memory OLTP table I first need to create a demo database that supports In-Memory tables. Creating a Natively Compiled Stored Procedure In order to better understand how to create a natively compiled stored procedure let me go through an example. Here is a partial list of some of the other TSQL constructs that cannot be used in a natively compiled stored procedure:Ī more comprehensive list of limitations can be found here: (v=sql.120).aspx This is just one of the limitations of natively compiled stored procedures. All tables accessed by a natively compiled stored procedure have to be In-Memory OLTP tables. You cannot access disk based tables in a natively compiled stored procedure.
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Because the code is compiled into machine code and can be run directly by the CPU without interpretation it is more efficient than normally created stored procedures, and it uses less machine instructions. The DLL is stored in a special folder on the SQL Server machine. That compile process first translates the store procedure code into “C”, and then into machine language and stores the code as a DLL. With a natively compiled stored procedure that all changes.Ī natively compiled stored procedure is compiled when it is created, rather than when it is executed. Instead, when a stored procedure is executed SQL Server compiles the stored procedure the first time it is executed. SQL Server is an interpretive language, which means code is not compiled in advance of execution. What are Natively Compiled Stored Procedures? In this article I will be discussing natively compiled stored procedures and showing you an example where they can improve performance. With this new in-memory feature, stored procedures can be now be natively compiled. In my last few articles I’ve been discussing the new SQL Server 2014 In-Memory OLTP tables.
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