select er.session_id, CAST(csql.text AS varchar(255)) AS CallingSQL
from master.sys.dm_exec_requests er WITH (NOLOCK)
CROSS APPLY fn_get_sql (er.sql_handle) csql
where er.session_id =309
session_id即为spid
select * from sys.dm_exec_sessions where session_id in (102,315);
exec sp_who