SQL Server/T-SQL Tutorial/User Role/CURRENT USER

select CURRENT_USER,

   <source lang="sql">

10> SELECT CURRENT_TIMESTAMP, USER, SYSTEM_USER, CURRENT_USER, 11> SESSION_USER 12> GO

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2008-08-17 13:20:57.503 dbo J\Administrator

                                                                                 dbo
          dbo

(1 rows affected)</source>