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SQL Query: 3 Methods for Calculating Cumulative SUM

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SQL provides various constructs for calculating cumulative sums, offering flexibility and efficiency in data analysis. In this article, we explore three distinct SQL queries that facilitate the computation of cumulative sums. Each query leverages different SQL constructs to achieve the desired outcome, catering to diverse analytical needs and preferences. Using Window Functions (e.g., PostgreSQL, SQL Server, Oracle) SELECT id, value, SUM(value) OVER (ORDER BY id) AS cumulative_sum  FROM your_table; This query uses the SUM() window function with the OVER clause to calculate the cumulative sum of the value column ordered by the id column. Using Subqueries (e.g., MySQL, SQLite): SELECT t1.id, t1.value, SUM(t2.value) AS cumulative_sum FROM your_table t1 JOIN your_table t2 ON t1.id >= t2.id GROUP BY t1.id, t1.value ORDER BY t1.id; This query uses a self-join to calculate the cumulative sum. It joins the table with itself, matching rows where the id in the first table is greater than or

2 Top Real-time AI New Approaches for Learners

Artificial Intelligence (AI) applications in real-time have two approaches. Those are Applied and Generalized. This post tells you the differences between these two.

Artificial Intelligence (AI).

Artificial Intelligence is the broader concept of machines being able to carry out tasks in a way that we would consider smart.

How the AI started.  A machine, which has reproducing capabilities, basic arithmetic, and memory are called logical-machines. As enter into a new era, a new thought process created now called AI (Artificial Intelligence)

2 AI Real-Time Top Approaches for New Learners
AI Approaches

Artificial intelligence has two approaches - Applied and Generalized. 

  1. Applied Artificial Intelligence.  The Applied AI is, you can find in systems designed to trade the Stocks or maneuver an autonomous vehicle would fall into this category. 
  2. Generalized Artificial Intelligence.  Systems or devices that can, in theory, handle any task – are less common, but this is where some of the most exciting advancements are happening today.

Machine Learning (ML).

The father of Machine learning is Arthur Samuel. Machine Learning; the vehicle which is driving AI development forward with the speed it currently has.

Machine Learning, two reasons to invent it.
  • Rather than teaching computers everything they need to know about the world and how to do the tasks, instead, it might be possible to teach them to learn themselves. 
  • The second, more recently, was the emergence of the Internet and the increase in producing the amount of digital information.

Summary.

What do you need to do? Code logic in such a way that machines to act intelligently without human intervention. It is the funda of ML.

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