Description: AddColumns is a DAX (Data Analysis Expressions) function that allows users of tools like Power BI and Excel to create calculated columns within a table. This function is fundamental for data manipulation and analysis, as it enables analysts and developers to enrich their datasets with information derived from other columns. By using AddColumns, complex calculations can be performed, and conditional logic can be added, facilitating the creation of more detailed and customized reports. The function is characterized by its ability to operate on tables and return a new table that includes the original columns along with the newly calculated columns. This not only enhances data visualization but also optimizes the performance of data models by allowing real-time calculations. In summary, AddColumns is a powerful tool that expands users’ analytical capabilities, enabling them to efficiently transform data into valuable information.