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Window functions are a group of functions that will perform calculations across a set of rows that are related to your current row. They are considered advanced sql and are often asked during data science interviews. It's also used at work a lot to solve many different types of problems. Let's summarize the 4 different types of window functions and cover the why and when you'd use them. 4 Types of Window Functions 1. Regular aggregate functions o These are aggregates like AVG, MIN/MAX, COUNT, SUM o You'll want to use these to aggregate your data and group it by another column like month or year 2. Ranking functions o ROW_NUMBER, RANK, RANK_DENSE o These are functions that help you rank your data. You can either rank your entire dataset or rank them by groups like by month or country o Extremely useful to generate ranking indexes within groups 3. Generating statistics o These are great if you need to generate simple statistics like NTILE (percentiles, quartiles, median

For starters, artificial intelligence is the machines which are designed and programmed in such a manner that they think and act like a human. Artificial intelligence becomes an important part of our daily life. Our life is changed by Al because this technology is used in a wide area of day to day services. The advantages of artificial intelligence are, AI would have a low error rate compared to humans, if coded properly. They would have incredible precision, accuracy, and speed. They won't be affected by hostile environments, thus able to complete dangerous tasks, explore in space, and endure problems that would injure or kill us. Artificial intelligence has many factors. The traditional problems (or goals) of AI research include reasoning, knowledge representation, planning, learning, natural language processing, perception and the ability to move and manipulate objects. Approaches include statistical methods, computational intelligence, and traditional symbolic AI. The key fea

Organize your collaboration with a remote team Remote work is growing in popularity. In a recent poll from Gallup, 37% of respondents said they already did some type of remote work. Obviously, going remote is the best way to go but of course, let us recognize the fact that it has its challenges. Once you decide to go remote, it can be difficult to approach organizational issues that come with managing staff all across the world. Tip 1. Schedule communications Your remote team will be working from a different location and probably a different time zone. Strictly keeping to scheduled meetings will help you organize your day and your team's workflow. Not having timely meetings can cause gaps in communication, delaying the launch of your project. Ukraine is conveniently located within three time zones of the rest of Europe, which is why many clients choose software development companies in Ukraine. Tip 2. Tools for remote teams Tools are essential for remote team collaboration as t