Data update

Task/Currency/DuckDB/currency.duckdb

@@ -0,0 +1,17 @@
+# Compute the required details in a table using DECIMAL(38,2) for dollars and cents.
+create or replace function bill( quantities, prices, taxrate) as table (
+  with cte as (select sum(q*p) as subtotal
+               from (select unnest(quantities) as q, unnest(prices) as p)),
+  details as (select subtotal, subtotal * taxrate as tax,
+                     (subtotal + tax ) as total
+              from cte)
+  select subtotal::DECIMAL(38,2) as subtotal,
+         tax::DECIMAL(38,2) as tax,
+         total::DECIMAL(38,2) as total
+  from details
+) ;
+
+# The order and tax rate:
+from bill ( [4000000000000000, 2],
+            [5.50, 2.86],
+            0.0765);