Drill 3: Change a value — Window functions

Describe what would change if you edited one value.

Beginner 5 min read Lesson 60 of 480 Challenge included

What you will be able to do

Describe what would change if you edited one value.

Practice task

Describe what would change if you edited one value.

windows.sqlSQL

SELECT course_slug, title, minutes,
       ROW_NUMBER() OVER (
         PARTITION BY course_slug ORDER BY minutes DESC
       ) AS rank_in_course,
       SUM(minutes) OVER (PARTITION BY course_slug) AS course_minutes,
       ROUND(AVG(minutes) OVER (PARTITION BY course_slug), 1) AS course_avg
FROM lessons
ORDER BY course_slug, rank_in_course;

Your turn

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Easy

Describe what would change if you edited one value.

TEXT · starter

Your answer…

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Next: Drill 3: Find the core line — Text and dates

Lesson 60 of 480 · 0% of course