PARENT_ID

The row id of the parent task. null if the task has no parent task.

Note, when writing this value the task Property.Relation properties are updated accordingly. Any parent or child relations which make this a child of another task are deleted and a new RELTYPE_PARENT relation pointing to the new parent is created. Be aware that Siblings will be split, i.e. they are not moved to the new parent. Currently this might cause siblings to become orphans if they don't have a parent-child relationship. This behavior may change in future version.

Value: Long