sys.login_token (Transact-SQL)
Applies to: 
SQL Server
Returns one row for every server principal that is part of the login token.
| Column name | Data type | Description |
|---|---|---|
| principal_id | int | ID of the principal. This value is unique within server. |
| sid | varbinary(85) | Security identifier of the principal. If this is a Windows principal, sid = Windows SID. If the login is mapped to a certificate, sid = GUID from the certificate. |
| name | nvarchar(128) | Name of the principal. This value is unique within server. |
| type | nvarchar(128) | Description of principal type. All types are mapped to sid. The value can be one of the following:SQL LOGIN WINDOWS LOGIN WINDOWS GROUP SERVER ROLE LOGIN MAPPED TO CERTIFICATE LOGIN MAPPED TO ASYMMETRIC KEY CERTIFICATE ASYMMETRIC KEY |
| usage | nvarchar(128) | Indicates the principal participates in the evaluation of GRANT or DENY permissions, or serves as an authenticator. This value can be one of the following: GRANT OR DENY DENY ONLY AUTHENTICATOR |
See Also
sys.user_token (Transact-SQL)
sys.server_principals (Transact-SQL)
sys.database_principals (Transact-SQL)
Principals (Database Engine)