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modify-views.md

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title description author ms.author ms.reviewer ms.date ms.service ms.subservice ms.topic helpviewer_keywords monikerRange
Modify views
After you define a view, you can modify its definition in the Database Engine without dropping and re-creating the view.
WilliamDAssafMSFT
wiassaf
randolphwest
05/10/2023
sql
table-view-index
how-to
views [SQL Server], renaming
views [SQL Server], modifying
modifying views
renaming views
>=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-server-2016||>=sql-server-linux-2017||=azuresqldb-mi-current

Modify views

[!INCLUDE sql-asdb-asdbmi-asa-pdw]

After you define a view, you can modify its definition in the [!INCLUDE ssdenoversion-md] without dropping and re-creating the view by using [!INCLUDEssManStudioFull] or [!INCLUDEtsql].

Limitations and restrictions

  • Modifying a view doesn't affect any dependent objects, such as stored procedures or triggers, unless the definition of the view changes in such a way that the dependent object is no longer valid.

  • If a view currently used is modified by using ALTER VIEW, the [!INCLUDEssDE] takes an exclusive schema lock on the view. When the lock is granted, and there are no active users of the view, the [!INCLUDEssDE] deletes all copies of the view from the procedure cache. Existing plans referencing the view remain in the cache but are recompiled when invoked.

  • ALTER VIEW can be applied to indexed views; however, ALTER VIEW unconditionally drops all indexes on the view.

Permissions

To execute ALTER VIEW, at a minimum, ALTER permission on OBJECT is required.

Use SQL Server Management Studio

  1. In Object Explorer, select the plus sign next to the database where your view is located and then select the plus sign next to the Views folder.

  2. Right-click on the view you wish to modify and select Design.

  3. In the diagram pane of the query designer, make changes to the view in one or more of the following ways:

    1. Select or clear the check boxes of any elements you wish to add or remove.

    2. Right-click within the diagram pane, select Add Table..., and then select the additional columns you want to add to the view from the Add Table dialog box.

    3. Right-click the title bar of the table you wish to remove and select Remove.

  4. On the File menu, select Save view name.

Use Transact-SQL

  1. In Object Explorer, connect to an instance of [!INCLUDEssDE].

  2. On the Standard bar, select New Query.

  3. Copy and paste the following example into the query window and select Execute. The example first creates a view and then modifies the view by using ALTER VIEW. A WHERE clause is added to the view definition.

    USE AdventureWorks2022;
GO

-- Create a view
CREATE VIEW HumanResources.EmployeeHireDate
AS
SELECT p.FirstName,
     p.LastName,
     e.HireDate
FROM HumanResources.Employee AS e
INNER JOIN Person.Person AS p
     ON e.BusinessEntityID = p.BusinessEntityID;

-- Modify the view by adding a WHERE clause to limit the rows returned
ALTER VIEW HumanResources.EmployeeHireDate
AS
SELECT p.FirstName,
     p.LastName,
     e.HireDate
FROM HumanResources.Employee AS e
INNER JOIN Person.Person AS p
     ON e.BusinessEntityID = p.BusinessEntityID
WHERE HireDate < CONVERT(DATETIME, '20020101', 101);
GO

Next steps