camper/deploy/down_payment.sql

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-- Deploy camper:down_payment to pg
-- requires: roles
-- requires: schema_camper
-- requires: payment
begin;
set search_path to camper, public;
create or replace function down_payment(p payment) returns integer as
$$
select round(p.total * p.down_payment_percent)::integer;
$$
language sql
stable
;
revoke execute on function down_payment(payment) from public;
grant execute on function down_payment(payment) to guest;
grant execute on function down_payment(payment) to employee;
grant execute on function down_payment(payment) to admin;
commit;