How to work with the Boolean field in Google Data Studio

If a data field in your data source can have only one of the two possible values: true or false then you should use the Boolean field while setting up your data source schema.

For example, consider the following Google Sheets data source:

Here the field ‘Is Revenue > Forecasted Revenue’ can have only two possible values: TRUE or FALSE.

For Google Sheets, the values TRUE and FALSE are of type boolean. 

So when setting up the data source schema, we should set the data type of the field ‘Is Revenue > Forecasted Revenue’ to ‘Boolean’:

This seems pretty straightforward. 

Isn’t it?

But here is the thing. 

This is not going to work. 

When you create a report from this data source schema which uses the  ‘Is Revenue > Forecasted Revenue field, you will get a system error:

That happened because Data Studio did not recognize the boolean values stored in Google Sheets as a boolean value. Instead, it treats these boolean fields as ‘text’ fields:

No matter how you store boolean values in Google Sheets (whether as true/false, TRUE/FALSE, 0/1, yes/no), Data Studio won’t recognize them as boolean values.

So if you want to use a boolean field in Data Studio then you would need to create and use a calculated metric. 

Get the ebook on Google Data Studio (50+ Pages)Get the ebook on Google Data Studio (50+ Pages)

Follow the steps below:

Step-1: Navigate to your data source schema editor and then change the data type of the field ‘Is Revenue > Forecasted Revenue’ from boolean to text:

Step-2: At the top right-hand side of your data source schema editor, find and click on the ‘ADD A FIELD’ button to create a new calculated field:

Step-3: Enter the name of your new calculated field. For example: ‘[NEW] Is Revenue > Forecasted Revenue’:

Step-4: Type the following text in the ‘Formula’ field: 

case when

followed by a white space:

Step-5: Hover your mouse over the field ‘Is Revenue > Forecasted Revenue’ then click on the + button:

After clicking on the + button, your formula field would look something like the one below:

Step-6: Enter a white space and then type the following text in your formula field:

= “TRUE” then true else false end

Make sure you see the green-colored checkmark  at the bottom of the formula box.

This checkmark indicates that you have entered the formula correctly. 

If the formula that you have entered is not correct then you will see this symbol   instead of the green checkmark.

I entered the following formula:

case when Is Revenue > Forecasted Revenue = “TRUE” then true else false end

Which means, if the value of the field ‘Is Revenue > Forecasted Revenue’ is ‘TRUE’ then return true.  

Otherwise, return false.

The following formula won’t work:

In Data Studio, you can compare a dimension or metric only with a literal value. 

Here we are comparing the ‘Revenue’ dimension with another dimension called ‘Forecasted Revenue’ via the logical expression: Revenue > Forecasted Revenue 

Step-7: Click on the ‘FORMAT FORMULA‘ button to make your formula more readable:

After clicking on the ‘FORMAT FORMULA‘ button your formula would look like the one below:

Step-8: Click on the ‘Save’ button.

Step-9: Now click on ‘All Fields’ in order to navigate back to the data source schema editor:

You should now see the new calculated field, listed in your data source schema:

Boolean field in Google Data Studio

Note: All calculated fields have got this ‘fx’ symbol through which you can easily spot them.

Now when you create a report based on this data source schema which uses the new calculated field, it would look like the one below:

Following is a short video which shows how I created the calculated field and then used it in my report:

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