使用function-expression 写入函数: function-expression: (parameter-listopt function-return-typeopt)=>function-body function-body: 表达式 parameter-list: fixed-parameter-list fixed-parameter-list,optional-parameter-list optional-parameter-list fixed-parameter-list: ...
function-type table-type nullable-type primitive-type:one of any anynonnull binary date datetime datetimezone duration function list logical none null number record table text time type 基元类型名称是上下文关键字,仅在类型上下文中识别 。 在类型上下文中使用括号将语法移回正则表达式上下文,需要使用关键字...
This function takes an optional parameter countOrCondition to support skipping multiple values.Transformation functionsExpand table NameDescription List.Accumulate Accumulates a result from the list. Starting from the initial value seed this function applies the accumulator function and returns the final ...
function-expression: (parameter-listopt return-typeopt)=>function-body function-body: 表达式 parameter-list: fixed-parameter-list fixed-parameter-list,optional-parameter-list optional-parameter-list fixed-parameter-list: parameter parameter,fixed-parameter-list ...
This function takes an optional parameter countOrCondition to support skipping multiple values. List.Buffer Buffers the list in memory. The result of this call is a stable list, which means it will have a determinimic count, and order of items. List.FindText Searches a list of values, ...
letsource={1..30},result=List.Select(source,(_)=>_>=20)// parameter nameinresult 或者: let source = {1..30}, result = List.Select(source, each _ >= 20 ) in result 函数是 Power Query 的核心,也是难点。为降低学习难度,先介绍这些基础,后续再逐步深化。
Power Query M Functions M函数学习中文帮助.pdf,Power Query M Functions By 张文洲 Power Query M Functions 2017-2-19 ACCESS.DATABASE 18 ACTIVEDIRECTORY.DOMAINS 18 ADODOTNET.DATASOURCE 18 ADODOTNET.QUERY 18 ANALYSISSERVICES.DATABASE 18 ANALYSISSERVICES.DAT
optional-parameter-specification-list optional-parameter-specification: optional parameter-specification parameter-specification: parameter-name parameter-type function-return-type: assertion assertion: as nullable-primitve-type The result of evaluating a function-type is a type ...
Power Query M 函数中文帮助手册20170804.pdf,Power Query M 函数中文帮助手册 (2017 年 8 月 4 日) Power BI 之家 QQ 群 微信公众号 Microsoft Power Query For Excel Power Bi Desktop Power Query M Formula Library Specification Access.Database 20 Activ
Power Query 标准库中一共有 700 多个函数,有些函数非常简单,有些则非常复杂。我们先看一个简单的函数: 代码语言:txt 复制 Text.Proper(text as nullable text, optional culture as nullable text) as nullable text 依据Microsoft Docs: Text.Proper: ...