От: | Qulac | ||
Дата: | 29.12.21 07:55 | ||
Оценка: | +1 |
U>SELECT ProductID
U>FROM Production.Product
U>EXCEPT
U>SELECT ProductID
U>FROM Production.WorkOrder ;
U>
select clients.name from clients
EXCEPT
select clients.name from clients inner join operation on clients.client_id=operation.client_id