Drill 12: Change a value — Aggregation and GROUP BY

Describe what would change if you edited one value.

Beginner 5 min read Lesson 200 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.

summary.sqlSQL

SELECT course_slug,
       COUNT(*) AS total,
       ROUND(AVG(minutes), 1) AS avg_minutes,
       SUM(minutes) AS total_minutes
FROM lessons
WHERE level = 'Beginner'
GROUP BY course_slug
HAVING COUNT(*) >= 3
ORDER BY avg_minutes DESC;

Your turn

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Describe what would change if you edited one value.

TEXT · starter

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Next: Drill 12: Find the core line — NULLs and COALESCE

Lesson 200 of 480 · 0% of course