Vazba
SQL vazba z tabulky D4_PL_DOPLN na tabulku D0PL_UCAST
select *
from D4_PL_DOPLN d4_pl_dopln
left outer join D0PL_UCAST d0pl_ucast on d0pl_ucast.idpk = d4_pl_dopln.idpk_ucast
select *
from D4_PL_DOPLN d4_pl_dopln
left outer join D0PL_UCAST d0pl_ucast on d0pl_ucast.idpk = d4_pl_dopln.idpk_ucast