Description: The HOUR function in DAX (Data Analysis Expressions) is a fundamental tool for manipulating temporal data in data models. Its main function is to extract the hour from a time value, returning a number that represents the hour in 24-hour format. This function is especially useful in data analysis where time is a critical factor, allowing analysts and developers to work with temporal data more effectively. The HOUR function takes a time value as an argument, which can be a field from a data model or a specific time value, and returns the hour part of that value. This enables calculations and analyses based on the time of day, facilitating data segmentation by time slots, creating trend charts over time, and optimizing reports that require a temporal focus. The versatility of the HOUR function makes it an essential tool in the arsenal of any professional working with data analysis and visualization tools that utilize DAX.
