Vazba
SQL vazba z tabulky PPF_HL na tabulku PPF_DALSI
select *
from PPF_HL ppf_hl
left outer join PPF_DALSI ppf_dalsi on ppf_dalsi.idpk = ppf_hl.idpk_dalsi
select *
from PPF_HL ppf_hl
left outer join PPF_DALSI ppf_dalsi on ppf_dalsi.idpk = ppf_hl.idpk_dalsi