find inserts and updates count in oracle database

SELECT sum( stat.executions_delta ) insert_executions
  FROM dba_hist_sqlstat stat
       JOIN dba_hist_sqltext txt ON (stat.sql_id = txt.sql_id )
       JOIN dba_hist_snapshot snap ON (stat.snap_id = snap.snap_id)
 WHERE snap.begin_interval_time BETWEEN TO_DATE('April 25, 2017, 11:00 A.M.','Month dd, YYYY, HH:MI A.M.') AND TO_DATE('April 25, 2017, 11:50 A.M.','Month dd, YYYY, HH:MI A.M.')
   AND txt.command_type = 2;

SELECT sum( stat.executions_delta ) update_executions
  FROM dba_hist_sqlstat stat
       JOIN dba_hist_sqltext txt ON (stat.sql_id = txt.sql_id )
       JOIN dba_hist_snapshot snap ON (stat.snap_id = snap.snap_id)
 WHERE snap.begin_interval_time BETWEEN TO_DATE('April 25, 2017, 11:00 A.M.','Month dd, YYYY, HH:MI A.M.') AND TO_DATE('April 25, 2017, 11:50 A.M.','Month dd, YYYY, HH:MI A.M.')
   AND txt.command_type = 6;