Sql 按日期列出的累计金额
我们有一个按日期保存累计金额值的表,例如:Sql 按日期列出的累计金额,sql,google-bigquery,klipfolio,Sql,Google Bigquery,Klipfolio,我们有一个按日期保存累计金额值的表,例如: | date. | | | 2015-03-01 | 1.23 | | 2015-03-04 | 1.98 | | 2015-03-06 | 2.23 | And we have a table with all dates we need, for instance: | date. | | 2015-03-01 | | 2015-03-02 | | 2015-03-03
| date. | |
| 2015-03-01 | 1.23 |
| 2015-03-04 | 1.98 |
| 2015-03-06 | 2.23 |
And we have a table with all dates we need, for instance:
| date. |
| 2015-03-01 |
| 2015-03-02 |
| 2015-03-03 |
| 2015-03-04 |
| 2015-03-05 |
| 2015-03-06 |
We would like to get:
| date. | |
| 2015-03-01 | 1.23 |
| 2015-03-02 | 1.23 |
| 2015-03-03 | 1.23 |
| 2015-03-04 | 1.98 |
| 2015-03-05 | 1.98 |
| 2015-03-06 | 2.23 |
仅仅使用SQL本身就可以吗
我不知道该怎么做
我尝试过一些交叉连接操作,但没有成功
谢谢我意识到-在这种情况下应该更简单(更简单)。
试试下面
SELECT
dates_table.date,
MAX(amounts.amount) OVER(ORDER BY dates_table.date) AS amount
FROM dates_table LEFT JOIN amounts_table
ON dates_table.date = amounts_table.date
因为你们中的一些人在接受这个答案和思考它时有困难
不起作用-我只是在下面添加了一个例子来“证明”上面的方法是有效的
:o)
结果是:
Row dates_date amount
1 2015-03-01 1.23
2 2015-03-02 1.23
3 2015-03-03 1.23
4 2015-03-04 1.98
5 2015-03-05 1.98
6 2015-03-06 2.23
很抱歉,我无法复制这一个,在第二次量更改后,它无法正确获取值,第一个非常有效,非常感谢,没问题-它在我的快速测试中有效-因此我也想分享它。我相信-它仍然应该工作-但你需要小心字段命名-如果你有机会尝试使其工作:o)在回答中添加示例Mikhail,对不起,我以前无法使其工作,但我现在得到了你。这是一个很棒的解决方案。再次谢谢你,没问题。很高兴你能让它为你自己工作
SELECT
dates.date,
MAX(amounts.amount) OVER(ORDER BY dates.date) AS amount
FROM (
SELECT * FROM
(SELECT '2015-03-01' AS [date]),
(SELECT '2015-03-02' AS [date]),
(SELECT '2015-03-03' AS [date]),
(SELECT '2015-03-04' AS [date]),
(SELECT '2015-03-05' AS [date]),
(SELECT '2015-03-06' AS [date])
) AS dates
LEFT JOIN (
SELECT * FROM
(SELECT '2015-03-01' AS [date], 1.23 AS amount),
(SELECT '2015-03-04' AS [date], 1.98 AS amount),
(SELECT '2015-03-06' AS [date], 2.23 AS amount)
) AS amounts
ON dates.date = amounts.date
Row dates_date amount
1 2015-03-01 1.23
2 2015-03-02 1.23
3 2015-03-03 1.23
4 2015-03-04 1.98
5 2015-03-05 1.98
6 2015-03-06 2.23