GBQ窗口函数和算术运算

Question

有谁知道是否可以对使用GBQ窗口函数导出的结果进行任何算术运算？

例如，我可以使用伪代码将row_number增加100（某个数字），如下所示：

SELECT 100 + ROW_NUMBER() OVER (PARTITION BY X ORDER BY x_id DESC) increased_row_num
FROM Table1
...

Answer 1

您需要使用子查询

SELECT 100 + row_num AS increased_row_num FROM (
SELECT ROW_NUMBER() OVER (PARTITION BY X ORDER BY x_id DESC) AS row_num
FROM Table1
)

Answer 2

  

但我希望还有另一种解决方案

使用BigQuery Standard SQL预期功能现在可以正常工作

#standardSQL
SELECT 100 + ROW_NUMBER() OVER (PARTITION BY X ORDER BY x_id DESC) increased_row_num
FROM Table1

请参阅Enabling Standard SQL和Migrating from legacy SQL