Dax Placeholders

The DAX expressions written in a Dax template can reference special DAX placeholders.

Table templates

The placeholders used in table templates are identified by the @@ prefix.

@@GETCALENDAR()

Returns the base calendar table expression to generate a Date table. This result is commonly used in Date templated to get the initial CALENDAR or CALENDARAUTO expression defined by the configuration in terms of dates range and constraints.

@@GETCONFIG( < settings > )

Returns the value of the corresponding setting in the configuration.

For example, this code returns the value of the setting WorkingDays:

@@GETCONFIG( WorkingDays )

@@GETHOLIDAYNAME( < date > )

Retrieve the name of the holiday specified in the date provided as an argument (must be a valid DAX date expression).

@@GETISO()

Returns the IsoFormat specified in the Config object.

@@GETLASTSTEP()

Retrieves the table expression computed so far in a calculated table expression. It is useful to iterate the table expression built with the DAX expressions that do not depend on the current expression.

For example, it can be used to retrieve the first day of a custom fiscal month by writing:

MINX ( 
    FILTER ( 
        @@GETLASTSTEP(), 
        [Fiscal Year Month Number] = __FiscalYearMonthNumber 
    ), 
    [Date]
)

@@GETMAXDATE()

Returns the maximum date found in the columns specified for the autoscan.

@@GETMAXYEAR( < maxYear > )

Returns the maximum year applying to the default maxYear the constraints specified in the configuration settings LastYearMin and LastYearMax.

@@GETMINDATE()

Returns the minimum date found in the columns specified for the autoscan.

@@GETMINYEAR( < minYear > )

Returns the minimum year applying to the default minYear the constraints specified in the configuration settings FirstYearMin and FirstYearMax.

Measure templates

The DAX placeholders used in table templates can be identified by *_ and _* delimiters, or by the @@ prefix.

@_C-<column-attribute-name>_@

Returns a single column marked with the attribute specified as column-attribute-name. If zero, two or more columns are found with the specified attribute, an error is thrown.

@_CL-<column-attribute-name>_@

Returns a list of columns marked with the attribute specified as column-attribute-name.

@_T-<table-attribute-name>_@

Returns a single table marked with the attribute specified as column-attribute-name. If zero, two or more table are found with the specified attribute, an error is thrown.

@_TL-<table-attribute-name>_@

Returns a list of tables marked with the attribute specified as tables-attribute-name.

@_MEASURE_@

Returns the original measure name.

@_MEASUREFOLDER_@

Returns the original measure folder name.

@_TEMPLATE_@

Returns the template name.

@_TEMPLATEFOLDER_@

Returns the template item folder name. For example the YOY template item that has Growth defined in the DisplayFolder property would generate the following result for the Sales Amount measure:

@_MEASURE_@\@_TEMPLATEFOLDER_@

Sales Amount\Growth

@@GETMEASURE( < templateName > )

Returns a measure reference to the original measure if the templateName is not defined, or a measure reference to the corresponding template measure specified in templateName. For example, the following code in a measure template:

VAR __ValueCurrentPeriod = @@GETMEASURE()
VAR __ValuePreviousPeriod = @@GETMEASURE( PY )

results in the following code when applied to the measure Sales Amount (according to the configuration for prefix/suffix in template names, here the prefix is used):

VAR __ValueCurrentPeriod = [Sales Amount]
VAR __ValuePreviousPeriod = [PY Sales Amount]

@@GETDEFAULTVARIABLE( < var_name > )

Returns the content of the var_name variable defined in the template.

@@GETYEARENDFROMFIRSTMONTHVARIABLE( < var_name > )

Returns the end of the year string corresponding to the month number specified in the var_name variable. The result of this function can be used as an argument for DATESYTD, TOTALYTD, and PREVIOUSYEAR functions. For example, this is a template for YTD calculation.

CALCULATE (
    @@GETMEASURE(),
    DATESYTD ( @_C-SQLBI_AttributeTypes-Date_@,  @@GETYEARENDFROMFIRSTMONTHVARIABLE(__FirstFiscalMonth) )
)