====== MS-SQL Event 조회 ======

  - 현재 wait event 조회 <code sql>
SELECT  req.session_id
       ,blocking_session_id
       ,ses.host_name
       ,DB_NAME(req.database_id) AS DB_NAME
       ,ses.login_name
       ,req.status
       ,req.command
       ,req.start_time
       ,req.cpu_time
       ,req.total_elapsed_time / 1000.0 AS total_elapsed_time
       ,req.command
       ,req.wait_type
       ,sqltext.text
FROM    sys.dm_exec_requests req
CROSS APPLY sys.dm_exec_sql_text(sql_handle) AS sqltext
JOIN    sys.dm_exec_sessions ses
        ON ses.session_id = req.session_id
WHERE req.wait_type IS NOT NULL
--WHERE req.wait_type = '?'
</code>
  - 현재 실행중인 SQL 조회 <code sql>
SELECT /* MONITOR */  s2.text, 
session_id,
start_time,
STATUS, 
cpu_time, 
blocking_session_id, 
wait_type,
wait_time, 
wait_resource, 
open_transaction_count
FROM sys.dm_exec_requests a
CROSS APPLY sys.dm_exec_sql_text(a.sql_handle) AS s2  
WHERE STATUS <> 'background';
</code>