{
  "inspect_keys": "SELECT COUNT(*) AS lines,COUNT(DISTINCT line_id) AS unique_lines,COUNT(DISTINCT order_id) AS parent_orders FROM order_lines",
  "select_projection": "SELECT order_id,order_date,channel FROM orders ORDER BY order_id LIMIT 3",
  "relationship_audit": "SELECT l.line_id FROM order_lines l LEFT JOIN orders o USING(order_id) WHERE o.order_id IS NULL"
}