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GROUP BY Extensions in PostgreSQL

Introduction
CUBE
Summary

Instruction

Good job! CUBE creates all possible grouping combinations. This means that, unlike ROLLUP, CUBE does not change the query result when the order of columns inside the parentheses is changed.

Let’s verify this with a practice exercise.

Exercise

Use the template to experiment with various column orders. When you’re done, simply click I'm done. Next exercise to continue.