How to Count Events per Hour of the Day?

When working as a Data Analyst, you will often need to work with temporal data i.e. data that contains date and time information in a single field. There are various formats in which data time can be stored. Often, you will be required to filter the data for a specific time period. In this module, we will look at how to filter the data at an hourly level. We will learn how to extract only an hour from the entire date time field. For this, we will be majorly using EXTRACT or DATE PART functions in SQL. There can be many ways to solve this problem but the most common is to use these functions.