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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

4 Tableau Popular Products

I want to share with you what are Tableau Products most popular. This quick review helps you get instant knowledge.

Tableau

Tableau Products

  1. We’ve done years of research to build a system that supports people’s natural ability to think visually. Shift fluidly between views, following your natural train of thought. You’re not stuck in wizards or bogged down writing scripts. 
  2. You just create beautiful, rich data visualizations. 
  3. It's so easy to use that any Excel user can learn it. Get more results for less effort. And it’s 10 –100x faster than existing solutions. Here is all about What is Tableau software

1. Tableau desktop

  • Tableau Desktop is based on breakthrough technology from Stanford University that lets you drag and drop to analyze data.
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2. Tableau server

  • Tableau Server is a business intelligence application that provides browser-based analytics anyone can use. It’s a rapid-fire alternative to the slow pace of traditional business intelligence software. What makes Tableau different? It's designed for everyone. 
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3. Tableau online

  • Tableau Online is a hosted version of Tableau Server. It makes rapid-fire business analytics easier than ever. Share dashboards with your whole company and with customers and partners—in minutes. 
  • Provide live, interactive views of data that let people answer their own questions, right in a web browser or on a tablet. And do it in a secure, hosted environment. 
  • Tableau Online can scale up as much as you need and you can use it wherever you need it. You don't need to purchase, set up or manage any infrastructure. 
Also read:  Tableau Charts

4. Tableau public

  • Tableau Public is for anyone who wants to tell stories with interactive data on the web. It's delivered as a service that allows you to be up and running overnight. 
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  • Industry experts have cited figures showing that the average reading time of a web page with an interactive visual is 4, 5 or 6 times that of a static web page.

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