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title description author ms.author ms.date ms.service ms.subservice ms.topic helpviewer_keywords monikerRange
View or change the compatibility level of a database
Learn how to view or change the compatibility level of a database in SQL Server or Azure SQL by using SQL Server Management Studio or Transact-SQL.
WilliamDAssafMSFT
wiassaf
2/2/2022
sql
supportability
conceptual
compatibility levels [SQL Server], viewing
compatibility [SQL Server], databases
compatibility levels [SQL Server], changing
=azuresqldb-current||>=sql-server-2016||>=sql-server-linux-2017||=azuresqldb-mi-current

View or change the compatibility level of a database

[!INCLUDE SQL Server Azure SQL Database Azure SQL Managed Instance] This article describes how to view or change the compatibility level of a database in [!INCLUDEssnoversion], Azure SQL Database, or Azure SQL Managed Instance by using [!INCLUDEssManStudioFull] or [!INCLUDEtsql].

Important

Before you change the compatibility level of a database, you should understand the impact of the change on your applications. For more information, see ALTER DATABASE Compatibility Level (Transact-SQL).

Permissions

Requires ALTER permission on the database.

Use SQL Server Management Studio

To view or change the compatibility level of a database using SQL Server Management Studio (SSMS)

  1. Connect to the appropriate server or instance hosting your database.

  2. Select the server name in Object Explorer.

  3. Expand Databases, and, depending on the database, either select a user database or expand System Databases and select a system database.

Note

You cannot modify the compatibility level of system databases in Azure SQL Database.

  1. Right-click the database, and then select Properties.

    The Database Properties dialog box opens.

  2. In the Select a page pane, select Options.

  3. The current compatibility level is displayed in the Compatibility level list box.

    To change the compatibility level, select a different option from the list. The available options for different [!INCLUDEssDE-md] versions are listed in the ALTER DATABASE Compatibility Level (Transact-SQL) page.

Use Transact-SQL

You can use Transact-SQL to view or change the compatibility level of a database using SSMS or Azure Data Studio.

View the compatibility level of a database

  1. Connect to the appropriate server or instance hosting your database.

  2. Open a New Query.

  3. Copy and paste the following example into the query window and select Execute. This example returns the compatibility level of the [!INCLUDE sssampledbobject-md] sample database.

USE AdventureWorks2022;  
GO  
SELECT compatibility_level  
FROM sys.databases WHERE name = 'AdventureWorks2022';  
GO

Change the compatibility level of a database

  1. Connect to the appropriate server or instance hosting your database.

  2. From the Standard bar, select New Query.

  3. Copy and paste the following example into the query window and select Execute. This example changes the compatibility level of the [!INCLUDE sssampledbobject-md] database to 160, which is the compatibility level for [!INCLUDE sssql22-md].

ALTER DATABASE AdventureWorks2022  
SET COMPATIBILITY_LEVEL = 160;  
GO

Next steps