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DROP SIGNATURE (Transact-SQL)

SQL Server 2005

Updated: 17 July 2006

Drops a digital signature from a stored procedure, function, trigger, or assembly.

Topic link icon Transact-SQL Syntax Conventions

Copy 

DROP [ COUNTER ] SIGNATURE FROM module_name 
    BY <crypto_list> [ ,...n ]

<crypto_list> ::=
    CERTIFICATE cert_name
    | ASYMMETRIC KEY Asym_key_name
module_name

Is the name of a stored procedure, function, assembly, or trigger.

CERTIFICATE cert_name

Is the name of a certificate with which the stored procedure, function, assembly, or trigger is signed.

ASYMMETRIC KEY Asym_key_name

Is the name of an asymmetric key with which the stored procedure, function, assembly, or trigger is signed.

Information about signatures is visible in the sys.crypt_properties catalog view.

Requires ALTER permission on the object and CONTROL permission on the certificate or asymmetric key. If an associated private key is protected by a password, the user also must have the password.

The following example removes the signature of certificate HumanResourcesDP from the stored procedure HumanResources.uspUpdateEmployeeLogin.

Copy 
USE AdventureWorks;
DROP SIGNATURE FROM HumanResources.uspUpdateEmployeeLogin 
    BY CERTIFICATE HumanResourcesDP;
GO

Release History

17 July 2006

New content:
  • Corrected syntax. Removed references to passing signature as a parameter.
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