Power Query M is used to filter, combine, and mash-up data from one or more supported data sources.
从这篇文章开始,我们将介绍M函数在Power Query中的应用,这个系列会以微软发布的M函数官方文档为基础,官方文档参考地址:Power Query M formula language reference - PowerQuery M。 一、M函数简介 M函数是Power Query中用于数据转换和清洗的一种编程语言,它是一种函数式编程,所有的操作都是通过函数进行的,可以方便...
Power Query M formula language Quick tour of the Power Query M formula language Power Query M language specification Power Query M language specification Introduction Lexical Structure Basic Concepts Values Types Operators Let Conditionals Functions ...
This quick tour describes creating Power Query M formula language queries.Note M is a case-sensitive language.Create a query with the Power Query editorTo create an advanced query, you use the Power Query advanced editor. A mashup query is composed of variables, expressions, and values ...
A core capability of Power Query is to filter and combine, that is, to "mash-up" data from one or more of a rich collection of supported data sources. Any such data mashup is expressed using the Power Query Formula Language (informally known as "M"). Pow...
editor. Some of these transformations might require special configurations and settings that the graphical interface doesn't currently support. The Power Query engine uses a scripting language behind the scenes for all Power Query transformations: the Power Query M formula language, also known as M....
M 语言是 Power Query 的数据转换语言。 查询中发生的任何操作最终都以 M 编写。如果要使用 Power Query 引擎执行高级转换,可以使用高级编辑器访问查询的脚本,并根据需要对其进行修改。 如果发现用户界面函数和转换无法执行所需的确切更改,请使用高级编辑器和 M 语言微调函数和转换。
Power Query M 语言规范 项目 2024/11/14 4 个参与者 反馈 该规范介绍了构成 Power Query M 语言的基本概念的值、表达式、环境和变量、标识符和计算模型。该规范包含在以下主题中。介绍 词法结构 基本概念 值 类型 运算符 Let 条件语句 函数 错误处理 节 合并语法反馈 此页面是否有帮助? 是 否 提供产品...
At the heart of the query is the Power Query M formula language, a case-sensitive, data mashup language available to Power BI Desktop, Power Query in Excel, and the Get & Transform import feature in Excel 2016. As with many languages, Power Query stateme...
doesn’t begin to expose the power of the underlying language: I’d urge you to take a look at the Formula Language Specification and Library Specification documents which can be downloaded fromhereto see for yourself. So while it can certainly be used for self-service ETL it can do much,...