data-dwh-dbt-project/models/intermediate/cross/int_hardcoded_historical_currency_rates.sql

with
    hardcoded_rates as (select * from {{ ref("stg_seed__hardcoded_currency_rates") }}),
    dates as (select * from {{ ref("int_dates") }})
select d.date_day as rate_date, r.*
from dates d
cross join hardcoded_rates r
where d.date_day > cast({{ var("start_date") }} as date)