To create a pivot table that shows the last 4 weeks of data (i.e. a rolling 4 weeks), you can add a helper column to the source data to flag records in the last 4 weeks, then use the helper column to filter the data in the pivot table. In the example shown, the current date is August 25, 2019, and the pivot table shows 4 complete previous. When new data is added over time, the pivot table will continue to track the previous 4 weeks based on the current date.

Fields

In the pivot table shown, there are four fields in the source data: Date, Sales, Week, and Filter. Filter is a helper column with a formula flagging the last 4 weeks. Week is a helper column that returns the Monday for any given date (for convenience only). Sales is the value field, and Week has been added as a Row field to group by week:

Pivot table last 4 weeks field configuration - 1

Formula

The formula used in D5 (Week), copied down, is:

=B5-WEEKDAY(B5,3)

This formula returns the Monday of week for any given date .

The formula used in E5 (Filter), copied down, is:

=AND(B5>=TODAY()-WEEKDAY(TODAY(),3)-28,B5<TODAY()-WEEKDAY(TODAY(),3))

This formula checks for dates in the last n weeks . It returns TRUE when a date is in the last 4 complete weeks, and FALSE if not. See the link for a full explanation.

Customizing week count

To customize the weeks displayed, adjust the Filter formula as needed to increase or decrease days. For example, to display the last 6 weeks (42 days), use:

=AND(B5>=TODAY()-WEEKDAY(TODAY(),3)-42,B5<TODAY()-WEEKDAY(TODAY(),3))

Steps

  1. Add helper column for Week with the formula above
  2. Add helper column for Filter with the formula above
  3. Create a pivot table
  4. Add Sales as a Value field
  5. Add Week as a Row field
  6. Set number formatting for Week as desired
  7. Add helper column as a Filter, filter on TRUE

To create a pivot table that shows the last 7 days of data (or, more generally, the last n days) you can add a helper column to the source data with a formula to flag records in the last 7 days, then use the helper column to filter the data in the pivot table. In the example shown, the current date is August 16, 2019, and the pivot table shows the seven days previous.

Fields

In the pivot table shown, there are four fields in use: Date, Location, Sales, and Filter. Location is a Column field, Date is a Row field, Sales is a Value field, and Filter (the helper column) is a Filter field, as seen below:

Pivot table last 7 days field configuration - 2

Formula

The formula used in E5, copied down, is:

=AND(B5>=(TODAY()-7),B5<TODAY())

This formula returns TRUE when a record date is greater than or equal to today’s date - 7, and also less than today’s date.

Steps

  1. Add helper column with formula to data as shown
  2. Create a pivot table
  3. Add fields to Row, Column, and Value areas
  4. Add helper column as a Filter, filter on TRUE