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Ignacio L. Bisso

Learn the OVER() Clause in SQL with 7 Examples

Learn how to use the OVER() clause in your SQL queries and you will take a step forward in your SQL knowledge. Most data analysts and SQL developers have a good handle on the SELECT, FROM, WHERE, GROUP BY, and ORDER BY clauses. However, these clauses are only a limited subset of the SQL language. There are other clauses, such as OVER(), which allow us to create flexible SQL reports and add an enormous expressive power to the SQL language.

Tihomir Babic

The SQL OVER() Clause - When and Why to Use It

The OVER() clause, or how to reach a whole new level of data analysis. Why all the commotion around the SQL OVER() clause? I’ll tell you why: the OVER() clause introduces window functions. And what are window functions in SQL, you might ask? They are functions that operate on a window, i.e. a set of rows related to the current row. In that way, they are similar to the GROUP BY clause and to aggregate functions.

Tihomir Babic

The SQL OVER() Clause Explained

Here is a detailed explanation of the OVER() clause in SQL window functions. This is a detailed guide on using the OVER() clause in SQL window functions. I will focus specifically on this clause, which requires that you have at least a general idea of how window functions work. To make the best out of this article, take a look at the SQL Window Functions Cheat Sheet. Feel free to have it by your side as we go.