Run a real query, right here

This is the actual workbench over 400 invented orders — a genuinely large integer, a postcode with a leading zero, a wall-clock timestamp and some missing values, so you can see how each is handled.

SELECT
  region,
  count(*)        AS orders,
  sum(amount)     AS revenue,
  round(avg(amount), 2) AS avg_order
FROM orders
GROUP BY region
ORDER BY revenue DESC;

It fetches the engine first — about 7 MB over the wire, once, which unpacks to 34 MB of WebAssembly in the tab. We would rather ask than spend that on someone who only scrolled past, which is also why this does not start on its own.