Vazba
SQL vazba z tabulky PPOHZAV na tabulku O1CISELN
select *
from PPOHZAV ppohzav
left outer join O1CISELN o1ciseln on o1ciseln.ciselnik = ppohzav.mena_cis and o1ciseln.klic1 = ppohzav.mena_klic
select *
from PPOHZAV ppohzav
left outer join O1CISELN o1ciseln on o1ciseln.ciselnik = ppohzav.mena_cis and o1ciseln.klic1 = ppohzav.mena_klic