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Window Functions in PostgreSQL

Introduction
ROWS
RANGE
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Summary
22. Table revenue

Instruction

Before we start, let's take a look at the quiz table. Don't worry, it's not very complicated.

Exercise

Select all the information from the revenue table.

There are only three columns: department_id, year and amount. Mind you, you will need to write very similar queries in this part. The devil's in the detail!