Radar charts, also called spider charts, are great for comparing multiple variables across categories. While Tableau doesn’t natively support radar charts, you can still build one using calculated fields and some data reshaping.
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Author Archives: DailyBITalks
How to Use RANKX and TOPN for Dynamic Ranking in Power BI
In Power BI, effectively ranking data is crucial for insightful analysis. Two primary DAX functions facilitate this: TOPN and RANKX. While both serve to rank data, they operate differently and are suited for distinct scenarios.
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Hive SQL vs Regular SQL: A Practical Guide for Data Engineers and Analysts
In the world of data processing, SQL is the lingua franca—but not all SQLs are created equal. If you’ve worked with big data tools like Apache Hive, you’ve probably noticed that Hive SQL isn’t exactly the same as traditional SQL used in relational databases like MySQL, PostgreSQL, or SQL Server.
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Power BI UTC Offset by Date with DST Support
When working with datasets containing UTC timestamps, especially across multiple U.S. locations, it’s important to convert UTC time to the correct local time based on time zone and daylight saving time (DST) rules.
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How a WHERE Clause Can Break Your LEFT JOIN — and How to Fix It
TL;DR:
If you’re using a LEFT JOIN but filtering on the right table in the WHERE clause, you might unintentionally turn it into an INNER JOIN. Here’s why that happens, how to fix it, and how different databases handle it.
Understanding Partitioning in Databases: What p_date Means and Why It Matters
As data grows larger and more complex, optimizing for performance and scalability becomes essential. Partitioning is one of the most powerful strategies for managing big datasets efficiently. If you’ve come across a column like p_date in an SQL query, it often signals the use of table partitioning. But what does that mean, and how is it different from traditional databases?
A Guide to Power BI Time Intelligence Functions
In the dynamic world of business analytics, understanding trends over time is crucial. Power BI’s Time Intelligence Functions empower users to perform complex time-based calculations with ease, transforming raw data into actionable insights. This blog explores key Time Intelligence Functions, complete with examples and real-world applications.
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Promotion vs. Certification in Power BI: What They Mean and When to Use Them
When managing Power BI content like reports and datasets, knowing which ones to trust is critical. Power BI’s promotion and certification features help you highlight and share reliable content within your workspace. But what do these features mean, and how are they different? In this article, we’ll explain promotion vs certification in Power BI, introduce the concept of master data, and show you when to use each.
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How to Create Parallel Set in Tableau
Parallel sets are a visually striking way to represent flows and relationships between categories, offering deeper insights into complex data distributions. In this blog, we’ll guide you step by step on how to create a parallel set visualization in Tableau using the Sample Superstore dataset.
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Mastering Tableau Table Calculations: A Comprehensive Guide
Table calculations in Tableau are powerful tools that allow you to perform computations directly on the aggregated results in your visualization. Unlike calculated fields (which operate at the data source level), table calculations depend on the structure of your table or pane, making them ideal for dynamic, context-aware metrics. In this guide, we’ll break down compute using options, advanced settings like addressing and partitioning, and demonstrate practical examples using Tableau’s Superstore dataset.
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