SQL Window Functions by Example

Window Functions in SQL

Interested in how SQL window functions work?  We use some simple examples to get you started. SQL window functions are a bit different; they compute their result based on a set of rows rather than on a single row. In fact, the “window” in “window function” refers to that set of rows. Window functions are similar to aggregate functions, but there is one important difference. When we use aggregate functions with the GROUP BY clause, we “lose” the individual rows.

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