ALTER APPLICATION ROLE (Transact-SQL)
Changes the name, password, or default schema of an application role.
If the new application role name already exists in the database, the statement will fail. When the name, password, or default schema of an application role is changed the ID associated with the role is not changed.
Password expiration policy is not applied to application role passwords. For this reason, take extra care in selecting strong passwords. Applications that invoke application roles must store their passwords.
Application roles are visible in the sys.database_principals catalog view.
In SQL Server 2005 the behavior of schemas changed from the behavior in earlier versions of SQL Server. Code that assumes that schemas are equivalent to database users may not return correct results. Old catalog views, including sysobjects, should not be used in a database in which any of the following DDL statements has ever been used: CREATE SCHEMA, ALTER SCHEMA, DROP SCHEMA, CREATE USER, ALTER USER, DROP USER, CREATE ROLE, ALTER ROLE, DROP ROLE, CREATE APPROLE, ALTER APPROLE, DROP APPROLE, ALTER AUTHORIZATION. In a database in which any of these statements has ever been used, you must use the new catalog views. The new catalog views take into account the separation of principals and schemas that is introduced in SQL Server 2005. For more information about catalog views, see Catalog Views (Transact-SQL).
A. Changing the name of application role
The following example changes the name of the application role weekly_receipts to receipts_ledger.
USE AdventureWorks; CREATE APPLICATION ROLE weekly_receipts WITH PASSWORD = '987Gbv8$76sPYY5m23' , DEFAULT_SCHEMA = Sales; GO ALTER APPLICATION ROLE weekly_receipts WITH NAME = receipts_ledger; GO
B. Changing the password of application role
The following example changes the password of the application role receipts_ledger.
ALTER APPLICATION ROLE receipts_ledger WITH PASSWORD = '897yUUbv867y$200nk2i'; GO
C. Changing the name, password, and default schema
The following example changes the name, password, and default schema of the application role receipts_ledger all at the same time.
ALTER APPLICATION ROLE receipts_ledger WITH NAME = weekly_ledger, PASSWORD = '897yUUbv77bsrEE00nk2i', DEFAULT_SCHEMA = Production; GO