Show Monthly Data When Selecting Any Date Within the Month

[zivfr]

I'm building a dashboard in Looker Studio connected to a Google Sheets data source.

In my sheet, each record is assigned to a specific month, and the date field is standardized — for example: 01/05/2025 represents the entire month of May 2025 (I don’t have day-level granularity).

What I’m trying to achieve:

I want users to select any date or date range within a given month (e.g. May 7–13), and the dashboard should dynamically show all records associated with that entire month, even if the underlying record only has 01/05/2025 as its date.

What I tried:

• Created a "month/year" field with values like 01/05/2025

• Used a "Date" field selected via the Date Range filter in the dashboard

• Added a calculated field: FORMAT_DATETIME("%Y-%m", Date) = FORMAT_DATETIME("%Y-%m", month/year)

• Created a flag field ("is_same_month") to return "view" or "hide"

• Applied a filter to only include records where is_same_month = "view"

What’s not working:

When users select a date range that doesn’t include the 1st of the month (e.g. May 7–13), no records are shown — because all my records only have 01/05/2025 as their date, and it’s outside the selected range.

What I’m looking for:

Is there a way to dynamically match the selected date (from the Date Range filter) to the month of each record, so that any date selected within a month triggers all data for that month?

Or is there a way to normalize or extract the month from the selected date in the filter to compare it more effectively?

Thanks in advance for any help.

[sam8]

I like your idea of creating a calculated field that extracts the month/year. Could you have your users filter on that calculated field rather than the date field itself?