numerus/deploy/invoice_tax_amount.sql

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-- Deploy numerus:invoice_tax_amount to pg
-- requires: schema_numerus
-- requires: invoice_product
-- requires: invoice_product_tax
begin;
set search_path to numerus, public;
create or replace view invoice_tax_amount as
select invoice_id
, tax_id
, sum(round(round(price * quantity * (1 - discount_rate))::integer * tax_rate)::integer)::integer as amount
from invoice_product
join invoice_product_tax using (invoice_product_id)
group by invoice_id
, tax_id
;
grant select on table invoice_tax_amount to invoicer;
grant select on table invoice_tax_amount to admin;
commit;