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Our notes on Coddy

We wrote these notes when we read the Coddy site for our SQL comparisons. For each note, you see the day of our check and a link to the page that we read.

We give the label "Product's own words" to a note that holds only what Coddy says about its own product.

Coddy price and plans

  • Free. Coddy sells Plus and Pro plans without the energy limit; you do not need them for a certificate. Checked October 15, 2026 (source)

Coddy free use

  • Coddy says that every course and every certificate is free, with a daily energy limit. Checked October 15, 2026 (source)

Coddy account

  • On its certification page, Coddy says: "start with the first lesson. No card, no signup wall." When you select START LEARNING on the SQL page, Coddy says: "A few quick questions and a free account, then your course." With no account, you can read the public lesson pages and type SQL in the editor there. In our test with no account, we got no query result and no check on an answer, so we cannot say how far you can go. Coddy says about the quiz on a lesson: "Start the lesson to answer it and track your progress." Coddy adds your certificate to your account, so you need an account to get it. Checked November 3, 2026 (source)

Coddy query check and help

  • Coddy says that you do a coding challenge at the end of each lesson, and that it grades the challenge automatically. Product's own words Checked October 15, 2026 (source)
  • We found no final test. You earn each certificate when you finish a section. Checked October 15, 2026 (source)

Coddy SQL topics

  • In the Fundamentals section, Coddy has lessons on GROUP BY, subqueries, joins, self joins and WITH. There are also lessons on window functions such as ROW_NUMBER, LEAD and LAG, and RANK. Checked October 15, 2026 (source)

Coddy SQL engines

  • You run every lesson against a SQLite database in your browser. Checked October 15, 2026 (source)

Coddy content and size

  • You finish every lesson and challenge in a section. Coddy then makes the certificate. Coddy gives a separate certificate for each section. Product's own words Checked October 15, 2026 (source)
  • The Fundamentals section is 72 lessons, 76 challenges, 360 quiz questions and 1 project. Checked October 15, 2026 (source)
  • Coddy gives every certificate a unique ID and a public URL. Coddy says that anyone can paste the ID into its verification tool, or open the URL. Product's own words Checked October 15, 2026 (source)

Coddy updates

  • Coddy gives search engines April 25, 2026 as the change date of the SQL course page. Checked October 18, 2026 (source)

Coddy strengths and limits

  • You write and run SQL in every lesson of the Fundamentals section, up to window functions, and anyone can check the certificate by its ID. Checked October 15, 2026 (source)
  • You take no final test, and on the free plan you get 1 energy point every 4 hours. Checked October 15, 2026 (source)

Coddy in our SQL comparisons