Vazba
SQL vazba z tabulky PPLAN_POL na tabulku OKRUZ
select *
from PPLAN_POL pplan_pol
left outer join OKRUZ okruz on okruz.idpk = pplan_pol.idpk_uz
select *
from PPLAN_POL pplan_pol
left outer join OKRUZ okruz on okruz.idpk = pplan_pol.idpk_uz