GBQ窗口函数和算术运算

Question

Does anyone know if it is possible to do any arithmetic operation on a result derived using GBQ window functions?

For example, can I increase row_number by 100 (some number) using pseudocode like this:

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

Answer 1

You will need to use subquery for that

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

but I'we hoped that there is another solution

With BigQuery Standard SQL expected functionality works now as is

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

See Enabling Standard SQL and Migrating from legacy SQL