Power Query的本质——M语言。Power Query 在Excel2010和2013中是以插件形式存在的,Excel2016中已经内置这一功能了,其可见微软对其的重视。 值得欣慰的是,PQ不仅为我们快速导入不同数据源数据提供便利,也为我们提供了一系列新的函数,PQ中的公式简称为M公式,与PowerPivot中的DAX表达式是两兄弟。什么是M语言:用一种...
The Power Query M function reference includes articles for each of the over 700 functions. These reference articles are auto-generated from in-product help. To learn more about functions and how they work in an expression, go toUnderstanding Power Query M functions. ...
Ifvalueis of any other type, an error is returned. Example 1 Convert43910to adatevalue. Usage Power Query M Date.From(43910) Output #date(2020, 3, 20) Example 2 Convert#datetime(1899, 12, 30, 06, 45, 12)to adatevalue. Usage ...
Power Query M Excel.Workbook(File.Contents("C:\Book1.xlsx"), null, true){[Item="Sheet1"]}[Data] Output Power Query M Table.FromRecords({ [Column1 = "ID", Column2 = "Name", Column3 = "Phone"], [Column1 = 1, Column2 = "Bob", Column3 = "123-4567"], [Column1 = 3, Col...
Library functions may expose external state (such as the current time or the results of a query against a database that evolves over time), rendering them non-deterministic. While functions defined in M will not, as such, expose any such non-deterministic behavio...
Power Query M Table.FromRecords({ [CustomerID = 2, Name = "Jim", Phone = "987-6543"], [CustomerID = 3, Name = "Paul", Phone = "543-7890"], [CustomerID = 4, Name = "Ringo", Phone = "232-1550"] }) Example 2 Skip the first two rows of the table. ...
These commands can be used to add/remove M and JSON string formatting to/from the currently selected text. This can be helpful when you need to encode an embedded SQL (or other) query in an M expression, or when you're working with files that contain embedded M expressions, such as Po...
M and DAX are two completely different languages. M is used in Power Query (a.k.a. Get & Transform in Excel 2016) and the query tool for Power BI Desktop. Its functions and syntax are very different from Excel worksheet functions. M is a mashup query language used to query a multitude...
Agreed, the Syntax of your IF statement is good. Here is a nice breakdown on the subtle differences betwen the Excel IF and the Power BI IF http://www.excelguru.ca/blog/2014/08/27/the-if-function-in-power-query/ To learn more about DAX visit : aka.ms/practicalDAX Proud to be a ...
These commands can be used to add/remove M and JSON string formatting to/from the currently selected text. This can be helpful when you need to encode an embedded SQL (or other) query in an M expression, or when you're working with files that contain embedded M expressions, such as Po...