Drill 4: Explain each line — Indexes and query plans
Explain what each line of the example does.
What you will be able to do
- Explain what each line of the example does.
Practice task
Explain what each line of the example does.
CREATE INDEX lessons_course_minutes_idx
ON lessons (course_slug, minutes);
EXPLAIN QUERY PLAN
SELECT title, minutes
FROM lessons
WHERE course_slug = 'css' AND minutes > 12
ORDER BY minutes DESC;Your turn
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Explain what each line of the example does.
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