It is obvious right since everything will be in uppercase,
bp_addresses =
Select a."PartnerId" as partnerid,
a."PartnerRole" as partnerrole,
a."EmailAddress" as emailaddress,
a."CompanyName" as companyname,
a."AddressId" as addressid,
b."City" as city,
b."PostalCode" as postalcode,
b."Street" as street
from "SAP_HANA_EPM_DEMO"."sap.hana.democontent.epm.data::businessPartner" as a
inner join "SAP_HANA_EPM_DEMO"."sap.hana.democontent.epm.data::addresses" as b
on a."AddressId" = b."AddressId"
where a."PartnerRole" = :PartnerRole;