The following SELECT statement gives the user name and the elapsed time of the steps whose queries have transferred more than 10 MB of data.
SELECT lv.username, sv.elapsedtime FROM DBC.QryLogStepsV AS sv, DBC.QryLogV AS lv WHERE ServerByteCount / (1024*1024) GT 10 AND sv.queryid = lv.queryid;
The query returns the following result:
username TOM ElapsedTime 0:10:22.220000 username JOHN ElapsedTime 0:21:32.510000