DAX(Data Analysis Expressions)是一种用于分析和计算数据的语言,通常用于Power BI和Excel等工具中。DAX语句中的IF函数用于根据条件判断返回不同的值。然而,在DAX中,IF语句无法直接引用表的列。 DAX语言是基于表达式的,它主要用于在数据模型中创建自定义计算列、度量和表达式。在DAX中,IF函数可以在计算列或者度量中使...
CALCULATE() alters the filtering behaviour of a visual by applying zero, one, or more filters prior to evaluating the expression. CALCULATE() then “reruns” the built-in filter propagation engine in Power BI—the one that makes the filters automatically propagate from the lookup tables and flow...
You can create variables within an expression by usingVAR. VAR is technically not a function, it's a keyword to store the result of an expression as a named variable. That variable can then be passed as an argument to other measure expressions. For example: ...
If the expression has a digit in the position where the 0 appears in the format string, display it; otherwise, display a zero in that position.If the number has fewer digits than there are zeros (on either side of the decimal) in the format expression, display leading or trailing zeros....
(0)Digit placeholder. Display a digit or a zero. If the expression has a digit in the position where the 0 appears in the format string, display it; otherwise, display a zero in that position.If the number has fewer digits than there are zeros (on either side of the decimal) in the...
DAX formulas are very similar to Excel formulas. To create one, you type an equal sign, followed by a function name or expression, and any required values or arguments. Like Excel, DAX provides a variety of functions that you can use to work with strings, perform calculati...
0 (zero)FALSERanks in descending order of values of expression. If value is equal to the highest number in expression then RANKX returns 1. This is the default value when order parameter is omitted. 1TRUERanks in ascending order of expression. If value is equal to the lowest number in exp...
The first is the expression to be evaluated, and the second is a filter. After the opening parenthesis ( for the CALCULATE function, type SUM followed by another opening parenthesis (. Next, we'll pass an argument to the SUM function. Begin typing Sal, and then select Sales[SalesAmount],...
DAX is a collection of functions, operators, and constants that can be used in a formula, or expression, to calculate and return one or more values. Stated more simply, DAX helps you create new information from data already in your model. ...
Now I can see all the measures in my model, their expression, and other useful information about them. It also gives me their home table but in maybe a slightly less useful TableID column. Thankfully, there is an INFO.TABLES DAX function which has the name of table 10 and 13. To joi...