SQL Server/T-SQL/System/USER NAME

select USER_NAME()

 
4> SELECT GETDATE(), USER_NAME(), SUSER_SNAME(),
5> USER_NAME(), USER_NAME()
6> GO

----------------------- -------------------------------------------------------------------------------------------------------------------------------- -----------------------------------------------
--------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------------------------------
---------- --------------------------------------------------------------------------------------------------------------------------------
2008-08-17 13:20:57.703 dbo                                                                                                                              J\Administrator
                                                                                  dbo
           dbo
(1 rows affected)
1>