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Relative date filtering in Tableau - Cell-by-Cell Formula Trace

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Sample Data

Sample sales data with order dates and sales amounts.

CellValue
A1Order Date
A22024-05-01
A32024-05-15
A42024-06-01
A52024-06-10
A62024-06-20
B1Sales
B2100
B3150
B4200
B5250
B6300
Formula Trace
IF [Order Date] >= DATEADD('month', -1, TODAY()) THEN [Sales] ELSE 0 END
Step 1: TODAY()
Step 2: DATEADD('month', -1, 2024-06-21)
Step 3: [Order Date] >= 2024-05-21
Step 4: IF condition THEN [Sales] ELSE 0
Cell Reference Map
Order Date
↓
Sales
The formula uses Order Date and Sales columns, compares dates to one month before today.
Result
    A          B        C
1 |Order Date| Sales | Filtered Sales
2 |2024-05-01| 100   | 0             
3 |2024-05-15| 150   | 0             
4 |2024-06-01| 200   | 200           
5 |2024-06-10| 250   | 250           
6 |2024-06-20| 300   | 300
Filtered Sales column shows sales only for orders in the last month from today, others show zero.
Sheet Trace Quiz - 3 Questions
Test your understanding
What date does the formula consider as the start of the relative date filter?
A2024-06-01
B2024-05-01
C2024-05-21
D2024-06-21
Key Result
IF [DateField] >= DATEADD('month', -1, TODAY()) THEN [Measure] ELSE 0 END

Practice

(1/5)
1. What does a Relative Date filter in Tableau do?
easy
A. It filters data based on fixed dates you manually select.
B. It shows data for a dynamic time period like last 7 days or this month.
C. It groups data by categories like product or region.
D. It sorts data alphabetically by date.

Solution

  1. Step 1: Understand the purpose of Relative Date filter

    A Relative Date filter dynamically adjusts the data shown based on the current date, such as last 7 days or this month.

  2. Step 2: Compare with other filter types

    Fixed date filters require manual date selection, unlike Relative Date filters which update automatically.

  3. Final Answer:

    It shows data for a dynamic time period like last 7 days or this month. -> Option B

  4. Quick Check:

    Relative Date filter = dynamic time period [OK]
Hint: Relative Date filters always adjust with today's date [OK]
Common Mistakes:
  • Confusing Relative Date with fixed date filters
  • Thinking it sorts data instead of filtering
  • Assuming it groups data by categories
2. Which of the following is the correct way to apply a Relative Date filter in Tableau?
easy
A. Drag a date field to Filters, choose 'Relative Date', then select the desired period.
B. Drag a measure to Filters and select 'Relative Date'.
C. Right-click a dimension and select 'Sort by Relative Date'.
D. Create a calculated field with TODAY() and filter manually.

Solution

  1. Step 1: Identify how to apply Relative Date filter

    In Tableau, you drag a date field to the Filters shelf and then choose 'Relative Date' to set dynamic periods.

  2. Step 2: Eliminate incorrect options

    Measures cannot be filtered by Relative Date, sorting is different, and manual calculated fields are not the standard method.

  3. Final Answer:

    Drag a date field to Filters, choose 'Relative Date', then select the desired period. -> Option A

  4. Quick Check:

    Apply Relative Date filter via date field in Filters [OK]
Hint: Always start with a date field for Relative Date filters [OK]
Common Mistakes:
  • Trying to apply Relative Date on measures
  • Confusing sorting with filtering
  • Using manual calculated fields unnecessarily
3. Given today's date is 2024-06-15, what data will be shown if you apply a Relative Date filter for 'Last 7 days' on a sales date field?
medium
A. Sales data from 2024-06-01 to 2024-06-07 inclusive.
B. Sales data from 2024-06-15 only.
C. Sales data from 2024-06-08 to 2024-06-14 inclusive.
D. Sales data from 2024-06-09 to 2024-06-15 inclusive.

Solution

  1. Step 1: Understand 'Last 7 days' relative to today

    'Last 7 days' means the past 7 days including today.

  2. Step 2: Calculate the date range

    From 2024-06-15, last 7 days are 2024-06-09 through 2024-06-15 inclusive.

  3. Final Answer:

    Sales data from 2024-06-09 to 2024-06-15 inclusive. -> Option D

  4. Quick Check:

    Last 7 days includes today, from today back 6 days [OK]
Hint: Last 7 days includes today, 7 days ending today [OK]
Common Mistakes:
  • Excluding today's date mistakenly
  • Counting from beginning of month
  • Confusing with previous full week
4. You applied a Relative Date filter for 'This Month' but your dashboard shows no data. What is the most likely cause?
medium
A. The filter was set to 'Last Year' instead of 'This Month'.
B. You applied the filter on a non-date field.
C. The date field has no data for the current month.
D. The data source is disconnected.

Solution

  1. Step 1: Check data availability for current month

    If no data exists for the current month, the 'This Month' filter will show no results.

  2. Step 2: Consider other causes but focus on data

    Applying filter on non-date fields or wrong filter choice would cause errors or different results; disconnected data source usually causes errors, not empty data.

  3. Final Answer:

    The date field has no data for the current month. -> Option C

  4. Quick Check:

    No data in current month = empty 'This Month' filter result [OK]
Hint: Check if data exists for the filtered period first [OK]
Common Mistakes:
  • Assuming filter syntax error without checking data
  • Ignoring data source connection status
  • Confusing filter period with applied filter
5. You want to create a dashboard that always shows sales data for the last 30 days but excludes today. Which Relative Date filter setting should you use?
hard
A. Set filter to 'Last 30 days' excluding today.
B. Set filter to 'Last 31 days' including today.
C. Set filter to 'This Month' and manually exclude today.
D. Set filter to 'Last 30 days' including today.

Solution

  1. Step 1: Understand requirement to exclude today

    The filter must show the 30 days before today, not including today itself.

  2. Step 2: Choose correct Relative Date filter option

    'Last 30 days' excluding today matches the requirement exactly; including today or using 'This Month' won't exclude today properly.

  3. Final Answer:

    Set filter to 'Last 30 days' excluding today. -> Option A

  4. Quick Check:

    Exclude today by choosing 'Last 30 days' without today [OK]
Hint: Use 'Last 30 days' excluding today for past 30 full days [OK]
Common Mistakes:
  • Including today when it should be excluded
  • Using 'This Month' which varies in length
  • Adding extra days unnecessarily