Knowledge Base

A collection of 30 posts

Troubleshooting

How to Fix the 'Error Code: 6EA18A9E' Error in Tableau

When building a view or using specific features in Tableau Desktop, you may encounter an internal error message that interrupts your work: Unable to complete action Internal Error - An unexpected error occurred and the operation could not be completed. Error Code: 6EA18A9E The exact cause of this error code

Troubleshooting

How to Fix the 'An error occurred' Error When Using Tableau Agent

When configuring the OpenAI API for Tableau Agent in Tableau Server (version 2025.3 or later), the connection test in the settings may show as 'Success', but the following error message might appear when attempting to use the feature in web authoring: An error occurred. Please try again.

Knowledge Base

Tableau License Decision Guide

Successfully adopting Tableau requires configuring the optimal license structure tailored to your organization's data infrastructure and utilization goals. Beyond simply purchasing licenses based on the expected number of users, you must comprehensively consider where to store the data (Hosting), what level of security and management features are needed

Troubleshooting

How to Fix the 'HTTP Bad Request' Error When Publishing to Tableau Server

When publishing a workbook created in Tableau Desktop to Tableau Server or Tableau Cloud, you may encounter the following error message, and the publishing process will stop. Unexpected Error An error occurred while publishing the workbook. Error Code: 0505B44A HTTP bad request This error primarily occurs when the 'Project

Troubleshooting

How to Fix Data Blending Error with Logical Tables in Tableau

"Data sources that contain logical tables cannot be used as secondary data sources for data blending." This error occurs because Tableau's newer data model, Relationships (logical layer), conflicts with the older method of combining data known as Data Blending. In a data blend, the secondary data

Knowledge Base

What is Scrollytelling?

In the world of data visualization, going beyond simply displaying data to delivering a clear message and immersing the reader is a significant challenge. Today, let’s talk about one of the most effective data storytelling techniques: Scrollytelling. Defining Scrollytelling Scrollytelling is a portmanteau of 'Scroll' and '

Knowledge Base

Tableau Prep Guide

In data analysis projects, it is often said that Data Preparation accounts for 80% of the total time spent. While transforming raw data into an analysis-ready format is essential, it is also a repetitive and time-consuming task. In this post, we will introduce Tableau Prep, a tool that revolutionizes the

Knowledge Base

Tableau Server Guide: Architecture & Core Process

When operating Tableau Server, you may encounter various technical issues, such as slow dashboard loading speeds or extract refresh failures on specific nodes. To resolve these problems based on logic rather than intuition, it is essential to accurately understand how Tableau Server works internally—specifically, its Architecture. In this post,

Knowledge Base

Tableau API Guide

Tableau offers a variety of APIs for different purposes such as automation, integration, and extension. However, because there are so many API types—each with its own goals—it can be difficult for first-time users to decide which API to use. This post briefly introduces Tableau’s APIs and summarizes

Knowledge Base

Tableau Dashboard Action Execution Order

When setting up dashboard actions in Tableau, you might sometimes create multiple actions with the same trigger condition. For example, both actions may filter by the Category field, but each targets a different dashboard. Action NameTrigger ConditionTarget Sheet (or Dashboard)Action AOn selecting CategoryTarget AAction BOn selecting CategoryTarget B In

Knowledge Base

How to Import Different Tables from One Excel Sheet into Tableau

Users who are accustomed to Excel’s high degree of flexibility often store different types of tables within a single worksheet. While the standard approach for importing such data into Tableau is to separate each table into its own worksheet, you can instead use Excel’s Name Manager feature to

Knowledge Base

How to use Custom Number Formatting in Tableau

When building visualizations in Tableau, there are times when you need precise control over how numbers are displayed. For example, you may want to simplify figures by displaying them in millions, add specific suffixes, or format negative numbers with parentheses. To meet these needs, Tableau provides the Custom Number Formatting

Knowledge Base

Why Is Serial Number 1 Dated December 31, 1899?

When converting a date to a number in Excel, Google Sheets or Tableau, you'll notice that the value 1 represents a specific point in time. In Excel, that number corresponds to January 1, 1900, but in Google Sheets and Tableau, it points to December 31, 1899. Why do

Knowledge Base

What is Tableau Next?

An introduction to Tableau Next, the newly released analytics platform from Tableau.

Knowledge Base

Why "No." is the Abbreviation for "Number"

In our daily lives, we often see "Number" abbreviated as "No.". For example, when creating a list or indicating order, we use "No. 1," "No. 2," and so on. But if you look closely, the word "Number" doesn't contain the letter 'o' at all. So, why did "No." become the abbreviation for "Number"?

Knowledge Base

Using Date Constants in Tableau Calculated Fields

This is a method you can use when writing calculated fields that compare against a specific date.

Knowledge Base

Difference Between Top and Bottom Date Aggregation Options in Tableau

This post explains the confusing aggregation options that often appear when working with date fields in Tableau.

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Difference Between Blue and Green Fields in Tableau

Many people assume that blue fields are dimensions and green fields are measures. While this assumption often holds true, it’s not technically accurate. In this post, we’ll break down what these colors actually mean and how understanding them can improve your visualizations.

Knowledge Base

Understanding FIXED LOD Expressions in Tableau

LOD expressions allow you to perform calculations at a specific level of granularity, independent of the aggregation level currently used in your visualization. Among them, FIXED is a particularly useful function that lets you fix aggregations at a dimension level defined by the user.

Knowledge Base

Difference Between Tableau Public and Tableau Desktop

This article explains the key functional differences between Tableau Public and Tableau Desktop from the perspective of dashboard creation.

Knowledge Base

Run Your Under Development Connector in Tableau Desktop

This guide explains how to run Tableau Desktop without signature verification while developing a Tableau connector for a new data source.

Knowledge Base

Difference Between Client-side and Server-side Rendering in Tableau

This post explores the advantages depending on where the view is rendered.

Knowledge Base

Difference Between Standard Gregorian and ISO-8601

This section explains the differences between the Standard Gregorian and the ISO-8601 Week-Based in date calculations.

Knowledge Base

What is Business Intelligence

Business Intelligence(BI) refers to the entire process that a company uses to make informed business decisions. BI involves several key steps, including collecting data from various internal and external sources, transforming it into meaningful insights, and then visualizing it to help guide decision-making. Data collection can include not only

Knowledge Base

How to Check If Tableau Server Is Using ATR

Here’s how you can verify whether your Tableau Server is configured to use ATR (Authorization-To-Run).