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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

IBM these are analytics solutions offering to different industries

IBM analytics

Every industry has its own particular big data challenges. Banks need to analyze streaming transactions in real time to quickly identify potential fraud. Utility companies need to analyze energy usage data to gain control over demand. 

Retailers need to understand the social sentiment around their products and markets to develop more effective campaigns and promotions. Analytics solutions help organizations take control of big data and uncover the insights they need to make the best decisions.

IBM has Analytics Solutions in various lines:

  • Banks: Apply analytics to improve customer experiences and operational efficiency, and integrate risk into daily decision making.
  • Communication:Uncover insights about customers, network performance and market trends to make better business decisions.
  • Retail: Build lifetime customer relationships by meeting demands for innovative products while containing costs.
  • Education: Make more informed decisions to improve student performance and increase operational efficiency.
  • Energy Analytics: Transform your utility network and optimize customer operations with smarter energy systems.
  • Government: Gain insight into program performance, traffic patterns, public safety threats and more to better protect and serve citizens.
  • Healthcare: Anticipate, shape and optimize business and patient outcomes, and enable evidence-based, personalized medicine.
  • Industrial: Apply analytics in aerospace, defense, automotive, electronics, chemicals, petroleum, or industrial products companies.
  • Insurance: Deploy analytics at the point of impact to support better decisions about underwriting, claims and other areas of your business.
  • Life Sciences: Act on insights to drive growth, enhance relationships across the ecosystem and improve clinical development processes.
  • Media: Use analytics to provide a differentiated customer experience and drive operational transformation.
  • Transportation: Enhance services, manage capacity, and maximize the availability of assets and infrastructure.

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