For getting period over period statistics.
Compare table is used when applying formulas between columns.
Select Compare Table
Clone the column
Edit the cloned column. You can use lot of existing functions.
Use "Coalesce" for replacing - with 0.
You can use case statements. With this you can add sorting.
You can take actions in Einstein Analytics.
Go to Dataset and click on configure actions
At end of dataset created, very important to enable configure actions.
Recommended to create separate layout for each device.
Self exploration support on mobile device.
Actions allows you to also take snapshots and post it.