EXCLUDE LOD expression in Tableau - Dashboard Guide

Dashboard Mode - EXCLUDE LOD expression

Business Question

How much total sales did each product category make, ignoring the sales differences by region?

Sample Data

Order ID	Product Category	Region	Sales
1001	Furniture	East	200
1002	Furniture	West	150
1003	Technology	East	300
1004	Technology	West	250
1005	Office Supplies	East	100
1006	Office Supplies	West	120

Dashboard Components

• KPI Card: Total Sales Overall
  Formula: SUM([Sales])
  Result: 1120
• Bar Chart: Sales by Product Category and Region
  Shows sales split by category and region.
• Bar Chart with EXCLUDE LOD: Sales by Product Category ignoring Region
  Formula: {EXCLUDE [Region] : SUM([Sales])}
  Result example: Furniture = 350, Technology = 550, Office Supplies = 220
  This sums sales per category ignoring region differences.
• Table: Detailed Sales Data
  Shows all rows from sample data for reference.

Dashboard Layout

+----------------------+---------------------------+
|  KPI: Total Sales    |  Bar Chart: Sales by Cat & Region |
|       (Top Left)     |       (Top Right)          |
+----------------------+---------------------------+
|  Bar Chart: Sales by Category (Exclude Region)       |
|                  (Bottom Left)                        |
+-------------------------------------------------------+
|  Table: Detailed Sales Data                            |
|                  (Bottom Right)                       |
+-------------------------------------------------------+
    

Interactivity

Filters on Product Category and Region allow users to select specific categories or regions.

• Filtering Product Category updates all components to show only selected categories.
• Filtering Region updates the Bar Chart by Category & Region (to selected region sales), the EXCLUDE LOD Bar Chart (to category totals ignoring region filter), and the Detailed Table.
• KPI Total Sales updates based on all filters applied.

Self Check

If you add a filter to show only Region = East, which components update their values?

• KPI Total Sales: Updates to sum sales only from East region (200 + 300 + 100 = 600).
• Bar Chart Sales by Category & Region: Updates to show only East region sales.
• Bar Chart Sales by Category (Exclude Region): Does not update and still shows total sales per category ignoring region filter (Furniture = 350, Technology = 550, Office Supplies = 220).
• Detailed Table: Shows only rows with Region = East.

Key Result

Dashboard showing total sales and sales by product category with and without region detail using EXCLUDE LOD expression.

Practice

1. What does the EXCLUDE LOD expression do in Tableau?

easy

A. It filters data based on a condition.

B. It adds extra dimensions to the view for detailed analysis.

C. It removes specified dimensions from the view to aggregate data at a higher level.

D. It creates a calculated field that sums all values.

Solution

1. Step 1: Understand the purpose of EXCLUDE LOD

   EXCLUDE LOD removes certain dimensions from the calculation, simplifying the aggregation.

2. Step 2: Compare with other options

   Adding dimensions or filtering is not what EXCLUDE does; it specifically ignores dimensions.

3. Final Answer:

   It removes specified dimensions from the view to aggregate data at a higher level. -> Option C

4. Quick Check:

   EXCLUDE = remove dimensions [OK]

Hint: EXCLUDE means ignore some dimensions to see bigger picture [OK]

Common Mistakes:

• Confusing EXCLUDE with INCLUDE or FIXED LOD
• Thinking EXCLUDE filters data instead of changing aggregation level
• Assuming EXCLUDE adds dimensions instead of removing

2. Which of the following is the correct syntax for an EXCLUDE LOD expression in Tableau?

easy

A. {EXCLUDE [Category] : SUM([Sales])}

B. EXCLUDE {SUM([Sales]) : [Category]}

C. {INCLUDE [Category] : SUM([Sales])}

D. SUM({EXCLUDE [Category] : [Sales]})

Solution

1. Step 1: Recall the correct LOD syntax

   The correct syntax is curly braces with EXCLUDE, then the dimension in brackets, colon, and aggregation.

2. Step 2: Check each option

   {EXCLUDE [Category] : SUM([Sales])} matches the correct syntax. Options A, B, and C have syntax errors or wrong order.

3. Final Answer:

   {EXCLUDE [Category] : SUM([Sales])} -> Option A

4. Quick Check:

   LOD syntax = {EXCLUDE [Dimension] : Aggregation} [OK]

Hint: LOD expressions always use curly braces and colon [OK]

Common Mistakes:

• Placing EXCLUDE outside curly braces
• Swapping INCLUDE and EXCLUDE keywords
• Incorrect order of aggregation and dimensions

3. Given the view shows sales by [Region] and [Category], what does this expression return?
{EXCLUDE [Category] : SUM([Sales])}

medium

A. Total sales for each Region ignoring Category breakdown

B. Total sales for each Category ignoring Region breakdown

C. Total sales for each Region and Category combined

D. Total sales for all data ignoring Region and Category

Solution

1. Step 1: Identify dimensions in the view

   The view has Region and Category dimensions.

2. Step 2: Understand EXCLUDE [Category]

   EXCLUDE removes Category from calculation, so aggregation is by Region only.

3. Final Answer:

   Total sales for each Region ignoring Category breakdown -> Option A

4. Quick Check:

   EXCLUDE Category = aggregate by Region only [OK]

Hint: EXCLUDE removes dimension from aggregation level [OK]

Common Mistakes:

• Thinking EXCLUDE filters data instead of changing aggregation
• Confusing which dimension is excluded
• Assuming it sums all data ignoring all dimensions

4. You wrote this EXCLUDE LOD expression:
{EXCLUDE [Region] : SUM([Profit])}
But Tableau shows an error. What is the likely cause?

medium

A. You forgot to include curly braces around the expression.

B. You cannot exclude a dimension not present in the view.

C. The syntax is correct; the error is due to missing data.

D. You must use INCLUDE instead of EXCLUDE for aggregation.

Solution

1. Step 1: Check the syntax of the expression

   The syntax is correct, including curly braces.

2. Step 2: Identify the error cause

   EXCLUDE LOD can only exclude dimensions present in the view; if [Region] is absent, it errors.

3. Final Answer:

   You cannot exclude a dimension not present in the view. -> Option B

4. Quick Check:

   EXCLUDE requires dimension in view [OK]

Hint: EXCLUDE only for dimensions in the view [OK]

Common Mistakes:

• Assuming curly braces are missing
• Confusing EXCLUDE with INCLUDE
• Overlooking that excluded dimension must be in the view

5. You have sales data by [Region], [Category], and [Sub-Category]. You want to see total sales by Region only, ignoring Category and Sub-Category. Which EXCLUDE LOD expression achieves this?

hard

A. {EXCLUDE [Category] : SUM([Sales])}

B. {EXCLUDE [Region] : SUM([Sales])}

C. {EXCLUDE [Sub-Category] : SUM([Sales])}

D. {EXCLUDE [Category], [Sub-Category] : SUM([Sales])}

Solution

1. Step 1: Identify dimensions to exclude

   You want to ignore both Category and Sub-Category to aggregate by Region only.

2. Step 2: Write EXCLUDE with both dimensions

   Use EXCLUDE with both [Category] and [Sub-Category] inside curly braces.

3. Final Answer:

   {EXCLUDE [Category], [Sub-Category] : SUM([Sales])} -> Option D

4. Quick Check:

   Exclude both dimensions to aggregate by Region [OK]

Hint: List all dimensions to exclude inside EXCLUDE brackets [OK]

Common Mistakes:

• Excluding only one dimension when two are needed
• Excluding Region instead of Category/Sub-Category
• Incorrect syntax with missing commas