DAX

Most important 50 DAX functions

Here’s a curated list of the 50 most important DAX functions — grouped by category — that every Power BI Developer should know for interviews, certifications, and real-world use. 📅 Date & Time Functions ⏳ Time Intelligence Functions 🔢 Math & Aggregation Functions 🧠 Logical & Conditional Functions 📊 Filter Functions 🔗 Relationship & Table …

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ProductX DAX Function in Power BI

In DAX (Data Analysis Expressions), the PRODUCTX function multiplies all the values of a given expression evaluated over a table. Syntax of PRODUCTX: PRODUCTX(table, expression) table: The table to iterate over. expression: The expression to evaluate and multiply across each row. 🎯 Use Case: Calculating Compound Growth (Multiplicative Change) Let’s say we have a table …

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What is a Disconnected Parameter Table? and How to Create in Power BI?

What is a Disconnected Parameter Table? A disconnected parameter table (often created using a “What-If parameter” in Power BI Desktop) is a special kind of table that is not directly related to your main data model tables (like your Sales table). Its primary purpose is to provide a slicer or filter that a user can …

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Financial dataset, along with 5 advanced DAX questions & solutions

1. Slidescope Sample Financial Dataset (100 Rows) We’ll use a dataset representing sales transactions. This dataset includes information about Date, Product Category, Product Name, Sales Amount, Quantity, Customer Segment, and Region. Table Name: Sales Date Product Category Product Name Sales Amount Quantity Customer Segment Region Order ID 2024-01-05 Electronics Laptop X 1200 1 Consumer North …

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Power BI LINEST and LINESTX DAX Functions

Both functions perform linear regression (least-squares method) to calculate statistics for a straight line fitting your data. Here’s how they work: 1. LINEST Function Fits a line using columns from a single table. Syntax: ) Parameters: 2. LINESTX Function More flexible—works with tables filtered by DAX expressions or multiple tables. Syntax: ) Parameters: Examples Example …

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Format Operation in Power Query Editor in Power BI with example

The Format Operation in Power Query Editor in Power BI is used to transform text data in a column to a specific format, such as changing the case, trimming spaces, or adding prefixes or suffixes. This operation is particularly useful for cleaning and standardizing text data before using it in reports. Key Format Operations in …

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