Cloud SasS customers: 2019.2 has arrived and is live with our new flagship feature Windowed Aggregates!
This feature enables you to group sets of rows for the purpose of computing a specific function. Possible functions include the following calculations: Average, Sum, Count, First, Last, Min, Max, and Median.
See the Official 2019.2 Release Notes
for complete details (and, you bet, there's a lot more goodness in this release too.)