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DAX Formulas Reference Guide | Date and Time Functions (DAX)
PREVIOUSMONTH Function (DAX)
Returns a table that contains a column of all dates from the previous month, based on
the first date in the dates column, in the current context.
Syntax: PREVIOUSMONTH(<dates>)
Parameter Definition
dates A column that contains dates.
Return Value:
A table containing a single column of date values.
=CALCULATE(SUM(InternetSales_USD[SalesAmount_USD]), PREVIOUSMONTH(‘DateTime’[D
ateKey]))
PREVIOUSQUARTER Function (DAX)
Returns the first date of the quarter in the current context for the specified column of
dates.
Syntax: STARTOFQUARTER(<dates>)
Parameter Definition
dates A column that contains dates.
Return Value:
A table containing a single column and single row with a date value.
=STARTOFQUARTER(DateTime[DateKey])
PREVIOUSYEAR Function (DAX)
Returns a table that contains a column of all dates from the previous year, given the last
date in the dates column, in the current context.
Syntax: PREVIOUSYEAR(<dates>[,<year_end_date>])
Parameter Definition
dates A column that contains dates.
year_end_date A literal string with a date that defines the year-end date. The default is
December 31st. (Optional)
Return Value:
A table containing a single column of date values.
=CALCULATE(SUM(InternetSales_USD[SalesAmount_USD]), PREVIOUSYEAR(‘DateTime’[Dat
eKey]))
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