FIXED LOD expression in Tableau - Step-by-Step Guide

Introduction

FIXED LOD expressions in Tableau let you calculate values at a specific level, ignoring filters or other dimensions. This helps when you want a number fixed by certain categories, no matter what else changes on your dashboard.

When you want to show total sales per region even if the user filters by product category

When you need to calculate average sales per customer regardless of the date filter

When you want to compare each store's sales to the overall sales fixed by store

When you want to create a benchmark value that stays constant across different views

When you want to count unique customers fixed by city even if other filters apply

Steps

Step 1: Open

- Tableau Desktop workbook

Your data and sheets are visible

Step 2: Click

- Analysis menu > Create Calculated Field

A dialog box opens to create a new calculation

Step 3: Type

- Calculated Field dialog

You enter the FIXED LOD expression syntax

💡 Use syntax like {FIXED [Dimension]: AGGREGATION([Measure])} e.g. {FIXED [Region]: SUM([Sales])}

Step 4: Click

- OK button in Calculated Field dialog

The new calculated field appears in the Data pane

Step 5: Drag

- New calculated field to Rows or Columns shelf or Marks card

The visualization updates showing values fixed by the chosen dimension

Before vs After

Before

A sales chart filtered by product category shows different totals per region

After

A sales chart with FIXED LOD shows total sales per region constant, ignoring product category filter

Settings Reference

Calculation Editor

📍 Analysis menu > Create Calculated Field

Where you write FIXED LOD expressions

Default: Empty

Aggregation Functions

📍 Inside Calculation Editor

Defines how values are summarized in the FIXED expression

Default: Depends on calculation

Common Mistakes

Using FIXED without specifying a dimension

FIXED requires at least one dimension to fix the calculation level

Always include the dimension inside the curly braces, e.g. {FIXED [Region]: SUM([Sales])}

Expecting FIXED to respond to all filters

FIXED ignores filters on dimensions not included in the expression

Use INCLUDE or EXCLUDE LOD expressions if you want calculations to respond to filters differently

Summary

FIXED LOD expressions calculate values at a set dimension level, ignoring some filters.

They help compare fixed totals or averages even when users filter other data.

Remember to specify the dimension inside the FIXED expression to control the calculation level.

Practice

1. What does a FIXED LOD expression do in Tableau?

easy

A. Calculates a value at a specific dimension level, ignoring other filters

B. Filters data dynamically based on user selection

C. Aggregates data only after all filters are applied

D. Creates a new calculated field without aggregation

Solution

1. Step 1: Understand FIXED LOD purpose

   FIXED LOD calculates values at a fixed dimension level regardless of other filters.

2. Step 2: Compare with other options

   Dynamic filtering based on user selection and aggregating data after all filters do not describe FIXED LOD. Creating a new calculated field without aggregation is unrelated.

3. Final Answer:

   Calculates a value at a specific dimension level, ignoring other filters -> Option A

4. Quick Check:

   FIXED LOD = fixed level calculation [OK]

Hint: FIXED means fixed level, ignoring filters [OK]

Common Mistakes:

• Confusing FIXED with INCLUDE or EXCLUDE LOD
• Thinking FIXED respects all filters
• Assuming FIXED creates dynamic filters

2. Which of the following is the correct syntax for a FIXED LOD expression to calculate total sales by Region?

easy

A. SUM({FIXED [Region] [Sales]})

B. FIXED {SUM([Sales]) BY [Region]}

C. {FIXED [Region]: SUM([Sales])}

D. {INCLUDE [Region]: SUM([Sales])}

Solution

1. Step 1: Recall correct FIXED LOD syntax

   The correct syntax is {FIXED [Dimension]: AGG([Measure])}.

2. Step 2: Check each option

   {FIXED [Region]: SUM([Sales])} matches syntax exactly. The other options have invalid syntax like misplaced braces, missing colons, or use INCLUDE instead of FIXED.

3. Final Answer:

   {FIXED [Region]: SUM([Sales])} -> Option C

4. Quick Check:

   Correct FIXED syntax = {FIXED [Region]: SUM([Sales])} [OK]

Hint: FIXED syntax: {FIXED [Dimension]: AGG([Measure])} [OK]

Common Mistakes:

• Using INCLUDE instead of FIXED
• Misplacing braces or colons
• Omitting aggregation function

3. Given the data below, what is the result of {FIXED [Category]: SUM([Sales])} when placed on a view filtered to only show 'Furniture' products?

Data:
- Category: Furniture, Office Supplies
- Sales: Furniture = 1000, Office Supplies = 500

Options:

medium

A. 0

B. 1500

C. 500

D. 1000

Solution

1. Step 1: Understand FIXED LOD computes before viz filters

   {FIXED [Category]: SUM([Sales])} computes SUM([Sales]) partitioned by [Category] using full dataset before the Category filter.

2. Step 2: Calculate for Furniture

   Furniture total sales = 1000. Filter shows only Furniture (assuming Category on view), displaying 1000.

3. Final Answer:

   1000 -> Option D

4. Quick Check:

   FIXED [Category] = per-Category total for shown Category [OK]

Hint: FIXED [dim]: AGG = per-dim total before filter [OK]

Common Mistakes:

• Thinking FIXED ignores partition dim (picking grand total 1500)
• Confusing with {FIXED : SUM([Sales])} grand total
• Confusing FIXED with INCLUDE

4. Identify the error in this FIXED LOD expression:

{FIXED [Region] SUM([Profit])}

medium

A. Missing colon ':' after [Region]

B. SUM cannot be used inside FIXED

C. Braces {} are not allowed in FIXED expressions

D. Region should be inside quotes

Solution

1. Step 1: Check FIXED LOD syntax

   Correct syntax requires a colon ':' after the dimension list inside braces.

2. Step 2: Identify missing colon

   The expression misses ':' after [Region], causing syntax error.

3. Final Answer:

   Missing colon ':' after [Region] -> Option A

4. Quick Check:

   Colon required after dimension list [OK]

Hint: Always put ':' after dimensions in FIXED [OK]

Common Mistakes:

• Omitting colon ':' after dimension
• Misusing aggregation functions
• Incorrect brace usage

5. You want to create a dashboard showing each Product's sales as a percentage of total sales across all Regions, ignoring any Region filters applied. Which FIXED LOD expression correctly calculates total sales ignoring Region filters?

hard

A. {INCLUDE [Region]: SUM([Sales])}

B. {FIXED : SUM([Sales])}

C. {FIXED [Region]: SUM([Sales])}

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

Solution

1. Step 1: Understand requirement to ignore Region filters

   To ignore Region filters, FIXED expression should not include Region dimension.

2. Step 2: Analyze each option

   {FIXED : SUM([Sales])} fixes calculation at overall level (no dimension), ignoring Region filters. {FIXED [Region]: SUM([Sales])} fixes by Region, so respects Region. Options A and D use INCLUDE and EXCLUDE, not ignoring Region filters fully.

3. Final Answer:

   {FIXED : SUM([Sales])} -> Option B

4. Quick Check:

   FIXED without dimension ignores all filters [OK]

Hint: FIXED with no dimension ignores all filters [OK]

Common Mistakes:

• Including Region in FIXED when wanting to ignore it
• Using INCLUDE or EXCLUDE instead of FIXED
• Assuming EXCLUDE ignores filters fully