Audit Addlogin Event Class
Applies to: 
SQL Server
Azure SQL Database
Azure SQL Managed Instance
The Audit Addlogin event class occurs when a Microsoft SQL Server login is added or removed.
If you set additional properties when the login is added, such as default database, the information about these properties will be found in the TextData column of this event. If you set these properties while adding a login, the Audit Login Change Property Event will not occur.
This audit event is for the sp_addlogin and sp_droplogin stored procedures.
This event class may be removed in a future version of SQL Server. It is recommended that you use the Audit Server Principal Management event class instead.
Audit Addlogin Event Class Data Columns
| Data column name | Data type | Description | Column ID | Filterable |
|---|---|---|---|---|
| ApplicationName | nvarchar | Name of the client application that created the connection to an instance of SQL Server. This column is populated with the values passed by the application rather than the displayed name of the program. | 10 | Yes |
| ClientProcessID | int | ID assigned by the host computer to the process where the client application is running. This data column is populated if the client provides the client process ID. | 9 | Yes |
| DatabaseID | int | ID of the database specified by the USE database statement or the default database if no USE database statement has been issued for a given instance. SQL Server Profiler displays the name of the database if the ServerName data column is captured in the trace and the server is available. Determine the value for a database by using the DB_ID function. | 3 | Yes |
| DatabaseName | nvarchar | Name of the database in which the user statement is running. | 35 | Yes |
| EventClass | int | Type of event = 104. | 27 | No |
| EventSequence | int | Sequence of a given event within the request. | 51 | No |
| EventSubClass | int | Type of event subclass. 1=Add 2=Drop |
21 | Yes |
| HostName | nvarchar | Name of the computer on which the client is running. This data column is populated if the client provides the host name. To determine the host name, use the HOST_NAME function. | 8 | Yes |
| IsSystem | int | Indicates whether the event occurred on a system process or a user process. 1 = system, 0 = user. | 60 | Yes |
| LoginName | nvarchar | Name of the login of the user (either the SQL Server security login or the Microsoft Windows login credentials in the form of DOMAIN\username). | 11 | Yes |
| LoginSid | image | Security identification number (SID) of the logged-in user. You can find this information in the sys.server_principals catalog view. Each SID is unique for each login in the server. | 41 | Yes |
| NTDomainName | nvarchar | Windows domain to which the user belongs. | 7 | Yes |
| NTUserName | nvarchar | Windows user name. | 6 | Yes |
| RequestID | int | ID of the request containing the statement. | 49 | Yes |
| ServerName | nvarchar | Name of the instance of SQL Server being traced. | 26 | No |
| SessionLoginName | Nvarchar | Login name of the user who originated the session. For example, if you connect to SQL Server using Login1 and execute a statement as Login2, SessionLoginName shows Login1 and LoginName shows Login2. This column displays both SQL Server and Windows logins. | 64 | Yes |
| SPID | int | ID of the session on which the event occurred. | 12 | Yes |
| StartTime | datetime | Time at which the event started, if available. | 14 | Yes |
| Success | int | 1 = success. 0 = failure. For example, a value of 1 indicates success of a permissions check and a value of 0 indicates a failure of that check. | 23 | Yes |
| TargetLoginName | nvarchar | The name of the login to be added or dropped. | 42 | Yes |
| TargetLoginSid | image | The security identification number (SID) of the targeted login (if passed in as a parameter). | 43 | Yes |
| TransactionID | bigint | System-assigned ID of the transaction. | 4 | Yes |
| XactSequence | bigint | Token used to describe the current transaction. | 50 | Yes |
See Also
Extended Events
sp_trace_setevent (Transact-SQL)
Audit Login Change Property Event Class
sp_addlogin (Transact-SQL)
sp_droplogin (Transact-SQL)
Audit Server Principal Management Event Class