Vazba
SQL vazba z tabulky PVYKLSLOUP na tabulku PVYKLCAST
select *
from PVYKLSLOUP pvyklsloup
left outer join PVYKLCAST pvyklcast on pvyklcast.idpk = pvyklsloup.idpk_cast
select *
from PVYKLSLOUP pvyklsloup
left outer join PVYKLCAST pvyklcast on pvyklcast.idpk = pvyklsloup.idpk_cast