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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

12 Top Teradata Blogs

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Teradata is popular among data warehouse projects. I have collected good blogs for developers. Here you will get complete list. The following are 12 top Teradata blogs. Teradata with learn quest Teradata Tutorials Teradata first blog Teradata developer blog Teradata developers recommendations Teradata tuning Teradata fog blog Teradata Bigdata Blog Teradata blog big solutions Teradata Applications Blog Teradata Utilities Teradata Technology Blog Conclusion Not only reading getting knowledge from these blogs, if you feel these are good you can share to your friends.