Need a report that shows me all Job runs and whether they ran from Event or Schedule

Discussion created by JohnO'Mullane on Jan 8, 2016
Latest reply on Jun 13, 2016 by JohnO'Mullane
I need to generate a report from the database that will show me all job runs for a particular time period and whether they were executed from a schedule object, Event Object or ad hoc.
I know that the AH table contains a record of all job runs, but is there a field on this table that tell me how the job was execute?
If not, can I join with another table that will give me what I need?