如何计算sum？

const numbers = [1, 2, 3, 4, 5];
const sum = numbers.reduce((total, currentValue) => total + currentValue, 0);
console.log(sum); // 输出：15

function sum(numbers) {
  let total = 0;
  for (let i = 0; i < numbers.length; i++) {
    total += numbers[i];
  }
  return total;
}

const numbers = [1, 2, 3, 4, 5];
const result = sum(numbers);
console.log(result); // 输出：15

numbers = [1, 2, 3, 4, 5]
total = sum(numbers)
print(total) # 输出：15

SELECT SUM(column_name) FROM table_name;