Vazba
SQL vazba z tabulky C1ZAHR3C na tabulku C1ZAHR1
select *
from C1ZAHR3C c1zahr3c
left outer join C1ZAHR1 c1zahr1 on c1zahr1.idpk = c1zahr3c.idpk_czahr1
select *
from C1ZAHR3C c1zahr3c
left outer join C1ZAHR1 c1zahr1 on c1zahr1.idpk = c1zahr3c.idpk_czahr1