小编Jas*_*son的帖子

基于Mikhail的答案(如何计算同一工作日的滚动平均值与Big Query中的当前行？)

我希望复制这个,但用周数代替.以下是我的查询.由于星期数对于每行7行是相同的,因此它不会按预期工作

SELECT id, 
       date, 
       weeknumber, 
       sales_total,
       SUM(net_sales_total) OVER(rolling_last_week) last_week
FROM (
     SELECT id, 
            date,  
            sales_total,
            EXTRACT(WEEK FROM entry_date) weeknumber
     FROM `mydataset.mytable`   
)
WINDOW rolling_last_week AS (
   PARTITION BY id, weeknumber
   ORDER BY entry_date 
   ROWS BETWEEN 1 PRECEDING AND 1 PRECEDING
)
ORDER BY weeknumber, entry_date

表-A

+-------+---------+----------+-----------+
| id    |  date   |weeknumber|sales_total|
+-------+---------+----------+-----------+
| 1     | 01-01-17|    1     |     5     |
| 1     | 01-02-17|    1     |     5     |
| 1     | 01-03-17|    1     |     5 …