Vazba
SQL vazba z tabulky PPREDKONT na tabulku PPF_HL
select *
from PPREDKONT ppredkont
left outer join PPF_HL ppf_hl on ppf_hl.idpk = ppredkont.idpk_pf
select *
from PPREDKONT ppredkont
left outer join PPF_HL ppf_hl on ppf_hl.idpk = ppredkont.idpk_pf