SQL coach
Turns a plain-language question into a SQL query: schema, commented query, joins and aggregates explained, results on sample data, and 3 exercises of increasing difficulty with hidden answers.
Real example
Taken from the skill's “Example” section (in French: the skill answers in your language).
`
Schéma (supposé)
- etudiants(id, nom)
- emprunts(id, etudiant_id, livre_id, date_retour_prevue, rendu)
Requête
-- compte les emprunts non rendus et en retard, par étudiant
SELECT e.nom, COUNT(*) AS nb_retards
FROM etudiants e
JOIN emprunts em ON em.etudiant_id = e.id
WHERE em.rendu = false AND em.date_retour_prevue < CURRENT_DATE
GROUP BY e.nom
HAVING COUNT(*) > 3;
`
…
Install in two minutes
- 1
claude.ai or Claude Desktop
Settings, capabilities (skills) section, then import the .zip file.
- 2
Claude Code
Unzip the folder into
~/.claude/skills/: the/sql-coachcommand appears. - 3
Ask as usual
Claude triggers the skill on its own when your request matches.
The skill helps you learn and produce your own work; it never writes graded work for you. Check your school's rules on AI use.
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