如何检索行具有最大的行号的顾客?

你可以使用子查询或CTE:

WITH data AS (
  select name, order_id, date, (ROW_NUMBER () OVER (PARTITION BY name,order id 
  ORDER BY date)) as rn from table),
last_entry AS (SELECT name, max(rn) AS rn FROM d GROUP BY name)
SELECT data.*
FROM data JOIN last_entry
  ON last_entry.name = data.name
    AND last_entry.rn = data.rn;