Native Compilation Advisor
Applies to: SQL Server Azure SQL Database
Transaction Performance Analysis reports tells you which interpreted stored procedures in your database will benefit if ported to use native compilation. For details see Determining if a Table or Stored Procedure Should Be Ported to In-Memory OLTP.
After you identify a stored procedure that you would like to port to use native compilation, you can use the Native Compilation Advisor (NCA) to help you migrate the interpreted stored procedure to native compilation. For more information about natively compiled stored procedures, see Natively Compiled Stored Procedures.
In a given interpreted stored procedure, the NCA allows you to identify all the features that are not supported in native modules. The NCA provides documentation links to work-arounds or solutions.
For information about migration methodologies, see In-Memory OLTP - Common Workload Patterns and Migration Considerations.
Walkthrough Using the Native Compilation Advisor
In Object Explorer, right-click the stored procedure you want to convert, and select Native Compilation Advisor. This will display the welcome page for the Stored Procedure Native Compilation Advisor. Click Next to continue.
Stored Procedure Validation
This page will report if the stored procedure uses any constructs that are not compatible with native compilation. You can click Next to see details. If there are constructs that are not compatible with native compilation, you can click Next to see details.
Stored Procedure Validation Result
If there are constructs that are not compatible with native compilation, the Stored Procedure Validation Result page will display details. You can generate a report (click Generate Report), exit the Native Compilation Advisor, and update your code so that it is compatible with native compilation.
The following sample shows an interpreted stored procedure and the equivalent stored procedure for native compilation. The sample assumes a directory called c:\data.
As usual, the FILEGROUP element, and the USE mydatabase statement, apply to Microsoft SQL Server, but do not apply to Azure SQL Database.
CREATE DATABASE Demo ON PRIMARY(NAME = [Demo_data], FILENAME = 'C:\DATA\Demo_data.mdf', size=500MB) , FILEGROUP [Demo_fg] CONTAINS MEMORY_OPTIMIZED_DATA( NAME = [Demo_dir], FILENAME = 'C:\DATA\Demo_dir') LOG ON (name = [Demo_log], Filename='C:\DATA\Demo_log.ldf', size=500MB) COLLATE Latin1_General_100_BIN2; go USE Demo; go CREATE TABLE [dbo].[SalesOrders] ( [order_id] [int] NOT NULL, [order_date] [datetime] NOT NULL, [order_status] [tinyint] NOT NULL CONSTRAINT [PK_SalesOrders] PRIMARY KEY NONCLUSTERED HASH ( [order_id] ) WITH ( BUCKET_COUNT = 2097152) ) WITH ( MEMORY_OPTIMIZED = ON ) go -- Interpreted. CREATE PROCEDURE [dbo].[InsertOrder] @id INT, @date DATETIME2, @status TINYINT AS BEGIN INSERT dbo.SalesOrders VALUES (@id, @date, @status); END go -- Natively Compiled. CREATE PROCEDURE [dbo].[InsertOrderXTP] @id INT, @date DATETIME2, @status TINYINT WITH NATIVE_COMPILATION, SCHEMABINDING, EXECUTE AS OWNER AS BEGIN ATOMIC WITH (TRANSACTION ISOLATION LEVEL = SNAPSHOT, LANGUAGE = N'us_english' ) INSERT dbo.SalesOrders VALUES (@id, @date, @status); END go SELECT * from SalesOrders; go EXECUTE dbo.InsertOrder @id= 10, @date = '1956-01-01 12:00:00', @status = 1; EXECUTE dbo.InsertOrderXTP @id= 11, @date = '1956-01-01 12:01:00', @status = 2; SELECT * from SalesOrders;
Migrating to In-Memory OLTP
Requirements for Using Memory-Optimized Tables
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