SQL Server/T-SQL Tutorial/System Settings/SUSER NAME
SUSER_NAME Function returns the name of the user logged into the server.
<source lang="sql">
3> 4> select SUSER_NAME() 5> GO
J\Administrator (1 rows affected) 1></source>
<source lang="sql">
3> 4> select SUSER_NAME() 5> GO
J\Administrator (1 rows affected) 1></source>