我是在Power BI上学习DAX的新手，我必须计算表中具有不同日期的值之间的差异，如下所示（我很抱歉表示该表，上载时遇到了问题）：
O_01 | 675 | 2018
O_02 | 415 | 2018
O_03 | 601 | 2018
O_01 | 969 | 2017
O_02 | 964 | 2017
O_03 | 672 | 2017
我想生成一个新表，该表显示每个对象的年份之间的差值，如下所示：
O_01 |差异1
O_02 |差异2
O_03 |差异3
我一直在寻找一种使用DAX来解决此问题的方法，但是我找不到解决方案，只能找到使用量度的解决方案，但是在我的实际问题中，我必须处理416个对象，我认为这不是一个好主意采取416措施。
如果有人知道解决此问题的方法，我将非常感激。具体地说，这是Power BI上的问题。
致谢。
答案 0 :(得分：0)
Your problem is that you need to create a new measure (or many new measures) per Object. I would suggest looking at the source of the data and to use the M language (the upload of the data language) in order to create those measures.
As you're new to Power BI / Excel these are few references which I've found which could be helpful:
Theory:
https://community.powerbi.com/t5/Desktop/DAX-or-M-language-what-am-I-doing/td-p/334413
https://www.poweredsolutions.co/2015/02/04/getting-started-understanding-power-query-m-language/
https://hub.packtpub.com/use-m-functions-within-power-bi-querying-data/
And this one has some more hands-on examples: