select
UN.OrdNumber
from
CRMActivityQueueUnusedNumbers UN
join CRMActivityQueues2 CAQ2 on CAQ2.ID = UN.Parent_ID
join CRMActivities CA on CA.ActQueue_ID = CAQ2.DocQueue_ID
and CA.Period_ID = CAQ2.Period_ID
and CA.OrdNumber = UN.OrdNumber
where
UN.ID = :Reservation_IDGenerated by ABRA Software a.s. 27.10.2021 16:34:54