Vazba
SQL vazba z tabulky J2TANK_KARTY na tabulku JJPHMD
select *
from J2TANK_KARTY j2tank_karty
left outer join JJPHMD jjphmd on jjphmd.idpk = j2tank_karty.idpk_phm
select *
from J2TANK_KARTY j2tank_karty
left outer join JJPHMD jjphmd on jjphmd.idpk = j2tank_karty.idpk_phm