按组SQL总计运行(Oracle)

本文介绍了按组SQL总计运行(Oracle)的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我在Oracle数据库中有一个表，该表具有以下相关字段:位置，产品，日期，金额.我想编写一个查询，该查询将按位置，产品和日期获得运行总额.我在下面的示例表中列出了我希望得到的结果.

I have a table in an Oracle db that has the following fields of interest: Location, Product, Date, Amount. I would like to write a query that would get a running total of amount by Location, Product, and Date. I put an example table below of what I would like the results to be.

我可以获取运行总额，但到达新的位置/产品后无法重置.这是到目前为止的代码，非常感谢您的帮助，我觉得这是一个简单的解决方法.

I can get a running total but I can't get it to reset when I reach a new Location/Product. This is the code I have thus far, any help would be much appreciated, I have a feeling this is a simple fix.

select a.*, sum(Amount) over (order by Location, Product, Date) as Running_Amt from Example_Table a +----------+---------+-----------+------------+------------+ | Location | Product | Date | Amount |Running_Amt | +----------+---------+-----------+------------+------------+ | A | aa | 1/1/2013 | 100 | 100 | | A | aa | 1/5/2013 | -50 | 50 | | A | aa | 5/1/2013 | 100 | 150 | | A | aa | 8/1/2013 | 100 | 250 | | A | bb | 1/1/2013 | 500 | 500 | | A | bb | 1/5/2013 | -100 | 400 | | A | bb | 5/1/2013 | -100 | 300 | | A | bb | 8/1/2013 | 250 | 550 | | C | aa | 3/1/2013 | 550 | 550 | | C | aa | 5/5/2013 | -50 | 600 | | C | dd | 10/3/2013 | 999 | 999 | | C | dd | 12/2/2013 | 1 | 1000 | +----------+---------+-----------+------------+------------+

推荐答案

嗯，我想我已经解决了.

Ah, I think I have figured it out.

select a.*, sum(Amount) over (partition by Location, Product order by Date) as Running_Amt from Example_Table a