如何显示零计数？

Question

I am preparing a report with some data of places and the number of visits to these places by a list of staff. That is, each person has to visit a number of places in the week. I need to show the list of people, the place and count the total visits in the week.

I have two databases, the first one contains the person in charge and the place. And in the other one I have the history of visits where is the person, the week and the place.

However, I want to show the places that are still to be visited in a specific week. But as there is no data int the history database, Google Data Studio does not show anything, I need it to show me the place, week and zeros.

I tried to merge those two databases but I couldn't find solution. The week is numeric and the other are text.

Table 1: visits_history

Personal	Station	Week
Person1	Portal Américas	30
Person1	Portal Américas	30
Person1	MOVIL 1	30
Person1	MOVIL 1	30
Person1	Portal Américas	30
Person1	Portal Américas	30
Person1	Portal Américas	30
Person1	Portal Américas	30
Person1	Portal Américas	30
Person1	Portal Américas	30
Person1	Portal Américas	30
Person1	Portal Américas	30
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Eldorado	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	MOVIL 3	31
Person1	MOVIL 3	31
Person1	Banderas P. Central	31
Person1	Banderas P. Central	31
Person1	Banderas P. Central	31
Person1	Banderas P. Central	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31
Person1	Portal Américas	31

Table 2: visits_to_do_per_week

Supervisor	Punto
Person1	Banderas P. Central
Person1	Centro Comercial Gran Plaza Soacha
Person1	Centro Comercial Hayuelos
Person1	Centro Comercial Milenio Plaza
Person1	Movil 1
Person1	Movil 2
Person1	Movil 3
Person1	Portal Américas
Person1	Portal Sur
Person1	Super Cade Bosa
Person1	Zona Franca

Expected Result:

person	station_asigment	visits in the week
Person1	Banderas P. Central	1
Person1	Centro Comercial Gran Plaza Soacha	0
Person1	Centro Comercial Hayuelos	0
Person1	Centro Comercial Milenio Plaza	0
Person1	Movil 1	1
Person1	Movil 2	1
Person1	Movil 3	2
Person1	Portal Américas	1
Person1	Portal Sur	2
Person1	Super Cade Bosa	3

Editable Data Set (Google Sheets)

Answer 1

Assuming that visted table be as:

week	person	visited
35	Alice	Paris
35	Bob	Paris
35	Bob	New York
36	Alice	Paris

and the task table be:

person	place
Alice	Paris
Alice	Berlin
Alice	Amsterdam
Bob	Paris
Bob	New York
Bob	Chicago
Claire	Los Angeles

Case 1

I assume that each week the same places have to be visited.

In Data studio create in the visited table a slider parameter week_select to select a week. Then create a field with

week - week_select

Create a filter on the table with that field equal zero.

Blend the datasets:

Add a table chart with person and place and click twice on the blue plus button under Metric:

Then add a metric field visited with the formula

case when Record Count is null then 0 else 1 end

You end up with that

Case 2 In the task table there is also a week column.

So for each week other places have to be visited. Then there is no need to add the parameter and the week formula and the filter of it.