hotwire3.subnet_hid assumes subnet.notes is not null, but it's nullable
Either make subnet.notes NOT NULL or update hotwire.subnet_hid to handle null notes fields gracefully (and thereby not return a null value for subnet_hid.subnet_hid)
Either make subnet.notes NOT NULL or update hotwire.subnet_hid to handle null notes fields gracefully (and thereby not return a null value for subnet_hid.subnet_hid)