Summary for Aggregate Functions
Explore how to apply aggregate functions in MySQL to transform sets of values into single summaries. Understand the use of GROUP BY and WITH ROLLUP to generate detailed grouped results and learn how the GROUPING() function helps distinguish aggregate rows.
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We'll cover the following...
A SELECT statement with an aggregation function results in a table with a single row. However, we can think of an aggregation function as an operation that transforms a set of