Question

I’m using SqlserverCe compact edition in my application.
I’m using the left join in query.
Sqlce taking more time to execute.
below is code

SELECT calllog.consolename AS consolename, 
       COUNT(consolename)  AS totalcalls, 
       sub.cnt             AS emergencycalls 
FROM   calllog 
       LEFT JOIN (SELECT consolename, 
                         COUNT(*) AS cnt 
                  FROM   calllog 
                  WHERE  emergencycall = 'False' 
                         AND ( begintime >= '3/6/2011 10:52:39 AM' 
                               AND endtime <= '10/25/2011 6:52:39 PM' ) 
                  GROUP  BY consolename) AS sub 
         ON calllog.consolename = sub.consolename 
WHERE  ( begintime >= '3/6/2011 10:52:39 AM' 
         AND endtime <= '10/25/2011 6:52:39 PM' ) 
GROUP  BY calllog.consolename, 
          sub.cnt 
ORDER  BY totalcalls ASC 

please help me how can I avoid the complexty

Answer 1

Make sure you have an index for BeginTime, EndTime, EmergencyCall, etc.