Vazba
SQL vazba z tabulky PPREDKONT na tabulku PVF_HL
select *
from PPREDKONT ppredkont
left outer join PVF_HL pvf_hl on pvf_hl.idpk = ppredkont.idpk_vf
select *
from PPREDKONT ppredkont
left outer join PVF_HL pvf_hl on pvf_hl.idpk = ppredkont.idpk_vf