Our notes on Khan Academy

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

Khan Academy price and plans

Free. Khan Academy is a nonprofit and asks for donations. Checked October 12, 2026 (source)

Khan Academy free use

The whole course is free. Checked October 12, 2026 (source)

Khan Academy account

You need no account to start. Checked October 12, 2026 (source)

Khan Academy query check and help

You write SQL in an editor on each challenge step, and you pass each step only when you get the expected result from your query. Checked October 12, 2026 (source)

Khan Academy SQL topics

There are lessons on HAVING, IN subqueries, CASE, and inner, outer and self joins in the course. There are no lessons on window functions or CTEs. Checked October 12, 2026 (source)
You learn GROUP BY in the "Aggregating data" talk-through. Checked October 12, 2026 (source)

Khan Academy SQL engines

You write SQL for SQLite. On the challenge pages, Khan Academy runs a compiled SQLite in your browser. Checked October 22, 2026 (source)

Khan Academy content and size

One unit of five lessons, with 13 challenges and 4 projects. Checked October 12, 2026 (source)

Khan Academy certificate

Khan Academy shows no certificate on its Intro to SQL page. Checked October 12, 2026 (source)

Khan Academy updates

Khan Academy announced the full course on May 11, 2015, in a dated blog post. Checked October 12, 2026 (source)

Khan Academy strengths and limits

You watch short "talk-throughs" before step-by-step challenges, and Khan Academy shows a hint with the task of each challenge step. Checked October 24, 2026 (source)
There are no lessons on window functions or CTEs in the course. Checked October 23, 2026 (source)

Khan Academy in our SQL comparisons