SQL Window Function Builder

v1.0.0

Visual window-function builder — PARTITION BY, ORDER BY, frame clause, with sample preview.

Window function

Table name

PARTITION BY column(s)

ORDER BY column

SQL Window Function Query

SELECT
  *,
  ROW_NUMBER() OVER (
    PARTITION BY customer_id
    ORDER BY order_date DESC
  ) AS row_number_result
FROM orders;

-- Practical example: get latest order per customer
SELECT * FROM (
  SELECT
    *,
    ROW_NUMBER() OVER (PARTITION BY customer_id ORDER BY order_date DESC) AS rn
  FROM orders
) ranked
WHERE rn = 1;

-- Running total example:
SELECT
  order_date,
  amount,
  SUM(amount) OVER (ORDER BY order_date) AS running_total
FROM orders;