corani/functional.java

## functional.java
Integer result = 0;
for (Integer value : items) {
	result = result + value;
}

## functional.py
from functools import reduce
result = reduce(lambda x, y: x + y, items)

## functional.sql
SELECT SUM(value) FROM items
	Integer result = 0;
	for (Integer value : items) {
	result = result + value;
	}
	from functools import reduce
	result = reduce(lambda x, y: x + y, items)