Vazba
SQL vazba z tabulky PSOUVNNP na tabulku PSOUV
select *
from PSOUVNNP psouvnnp
left outer join PSOUV psouv on psouv.idpk = psouvnnp.idpk_psouv
select *
from PSOUVNNP psouvnnp
left outer join PSOUV psouv on psouv.idpk = psouvnnp.idpk_psouv