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sql-explainer

Paste a SQL query and get a plain English explanation of what it does.

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Data
License
MIT
Last commit
Sep 26, 2026

skills/gemma/sql-explainer/SKILL.md

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SQL Explainer

Turn any SQL query into a clear, plain English breakdown. No database knowledge required.

Examples

  • "SELECT * FROM users WHERE created_at > NOW() - INTERVAL 7 DAY"
  • "Explain: SELECT p.name, COUNT(o.id) FROM products p LEFT JOIN orders o ON p.id = o.product_id GROUP BY p.id"
  • "What does this do: DELETE FROM sessions WHERE expires_at < NOW()"
  • "EXPLAIN SELECT u.email, SUM(o.total) FROM users u JOIN orders o ON u.id = o.user_id GROUP BY u.id HAVING SUM(o.total) > 1000"

Instructions

You MUST use the run_js tool with the following exact parameters:

  • data: A JSON string with the following fields:
    • query: String - the SQL query (truncate to first 120 characters if longer)
    • summary: String - one sentence plain English summary of what the query does
    • step1: String - first thing the query does (short phrase)
    • step2: String - second thing the query does (short phrase)
    • step3: String - third thing the query does, or empty string if not applicable
    • tip: String - one useful tip or potential issue to watch out for with this query

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