row_number分区结果错误

Question

我使用ROW_NUMBER按销售额排名国家。查询如下所示

<Input onChange={e => alert(e.target.value)} />

由于某种原因，所有国家的排名都是一个。

Answer 1

如果按COUNTRY进行分区，则row_number将重置为1

SELECT country, 
       SUM(sales) AS sales, 
       ROW_NUMBER() OVER (ORDER BY SUM(sales) DESC) AS 'rank'
FROM table
GROUP BY country
ORDER BY sales DESC