Dax Functions 简明教程 DAX Functions - Information Dax Functions 简明教程 DAX Functions - Information DAX 信息函数查看作为参数提供的值或列并告诉您该值是否与预期类型匹配。 DAX Information functions look at the value or column that is provided as an argument and tell you whether the value matches the expected type. 以下是 DAX 信息函数 − Following are the DAX Information functions − DAX CONTAINS function DAX CUSTOMDATA function DAX ISBLANK function DAX ISERROR function DAX ISEMPTY function DAX ISEVEN function DAX ISLOGICAL function DAX ISNONTEXT function DAX ISNUMBER function DAX ISODD function DAX ISONORAFTER function DAX ISTEXT function DAX LOOKUPVALUE function DAX USERNAME function