How do I create a query on parent or child incidents or changes?
In Incident Management the Parent - Child relationships are held in the Incident Incident Business object. You can create a query based on Incident Incident to list both Parent and Child change details for each Parent - Child relationship. Then you can add criteria to select a Parent ID to list all child incidents for that Parent ID and add further criteria to list only required child incidents.
In Change Management the Parent - Child relationships are held in the Change Change Business object. A query can be created on this as for Incident Incident.