By default, the FOR Previous function refers to values from one time period ago. You can customize FOR Previous by adding a second parameter to the function.
For differences between FOR Previous and FOR PreviousPeriod, see Functions For Referring to Past Time Periods.
SELECT … FOR Previous(…,…) SELECT metric FOR Previous(time_attribute) SELECT metric FOR Previous(time_attribute, #periods_ago)
SELECT Revenues FOR Previous(Quarter)
By default, FOR Previous()refers to values from one time period ago. This can be customized by adding a second parameter to the function. For example, you may want to return a revenue value from three quarters ago (see below).
SELECT Revenues FOR Previous(Quarter , 3)
To be able to use FOR Previous to compare data to the same period of the last quarter/year when filtering by weeks, do the following:
- Switch the version of the Extensible Analytics Engine (see XAE - Extensible Analytics Engine) to 3.
To do so, set the
xae_versionplatform setting to
3(see Configure Various Features via Platform Settings).
Migrate the Date datasets in your project to the
To do so, see "Migrate from a Legacy Date Dimension to urn:custom_v2:date" in Custom Calendars - Self Service.