Returns the value of a specified certificate property.

Topic link iconTransact-SQL Syntax Conventions


CertProperty ( Cert_ID,'<PropertyName>' )

<PropertyName> ::=
   Expiry_Date | Start_Date | Issuer_Name 
   | Cert_Serial_Number | Subject | SID | String_SID 


  • Cert_ID
    Is the ID of the certificate. Cert_ID is an int.

  • Expiry_Date
    Is the date of expiration of the certificate.

  • Start_Date
    Is the date when the certificate becomes valid.

  • Issuer_Name
    Is the issuer name of the certificate.

  • Cert_Serial_Number
    Is the certificate serial number.

  • Subject
    Is the subject of the certificate.

  • SID
    Is the SID of the certificate. This is also the SID of any login or user mapped to this certificate.

  • String_SID
    Is the SID of the certificate as a character string. This is also the SID of any login or user mapped to the certificate.

Return Types

The property specification must be enclosed in single quotation marks.

The return type depends on the property that is specified in the function call. All return values are wrapped in the return type of sql_variant.

  • Expiry_Date and Start_Date return datetime.

  • Cert_Serial_Number, Issuer_Name, Subject, and String_SID return nvarchar.

  • SID returns varbinary.


Information about certificates is visible in the sys.certificates catalog view.


Requires some permission on the certificate and that the caller has not been denied VIEW DEFINITION permission on the certificate.


The following example returns the certificate subject.

-- First create a certificate.
    START_DATE = '04/04/2004' ,
    EXPIRY_DATE = '07/07/2007' ,
    SUBJECT = 'Marketing Print Division';

-- Now use CertProperty to examine certificate
-- Marketing19's properties.
DECLARE @CertSubject sql_variant;
set @CertSubject = CertProperty( Cert_ID('Marketing19'), 'Subject');
PRINT CONVERT(nvarchar, @CertSubject);