Rolling Agg

Row-based; Calculates a rolling aggregate based on a relative row window.

Pass in order_by columns and offsets to create a row-based look-back or look-forward windows.

Example use case: Aggregate the last 10 sales for a customer regardless of when they occurred.

Parameters

Name	Type	Description	Is Optional
aggregations	agg_dict	Dictionary of columns and aggregate functions to apply. A column can have a list of multiple aggregates applied. One column will be created for each column:aggregate pair.
order_by	column_list	Column(s) to order rows by when calculating the agg window
offsets	int_list	List of numeric values to offset the date column. Positive values apply a look-back window. Negative values apply a look-forward window. One column will be created for each offset value.
group_by	column_list	Column(s) to group by when calculating the agg window	True

Example

internet_sales = rasgo.get.dataset(74)

ds = internet_sales.rolling_agg(
      aggregations={
        'SALESAMOUNT':['MAX', 'MIN', 'SUM']
      },
      order_by=['ORDERDATE'],
      offsets=[-7, 7, 14],
      group_by=['PRODUCTKEY'],
  )

Source Code

RasgoTransforms/rolling_agg.sql at main · rasgointelligence/RasgoTransformsGitHub