Our notes on Udacity
We wrote these notes when we read the Udacity 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 Udacity says about its own product.
Udacity price and plans
- Free. On the same page, Udacity offers a subscription for its paid SQL Nanodegree program. Checked October 15, 2026 (source)
Udacity free use
- The whole course is free. Udacity marks it "Free Course". Checked October 15, 2026 (source)
Udacity account
- Udacity says that you need a Udacity account to enroll in its programs. Checked October 15, 2026 (source)
Udacity query check and help
- Udacity says that in its courses, you do quizzes and exercises between short videos. Udacity says that you can try them as many times as you like. Without an account, we could not see how Udacity checks a query. Product's own words Checked October 15, 2026 (source)
Udacity SQL topics
- Udacity lists the lessons "SQL Joins" and "[Advanced] SQL Advanced JOINs & Performance Tuning" in the course. In "SQL Aggregations", Udacity names SUM, AVG, COUNT and HAVING. We found no mention of outer joins or GROUP BY in the outline. Checked October 15, 2026 (source)
- In "SQL Aggregations", Udacity names "CASE, HAVING, and DATE functions". We found no lesson on analysis by period in the outline. Checked October 15, 2026 (source)
- Udacity lists the lessons "SQL Subqueries & Temporary Tables" and "[Advanced] SQL Window Functions" in the course. We found no mention of CTEs in the outline. Checked October 15, 2026 (source)
Udacity SQL engines
- We found no database engine on the course page. Checked October 15, 2026 (source)
Udacity content and size
- There are 10 items in the course outline. Seven are SQL lessons, from Basic SQL to Advanced JOINs and Performance Tuning. The other three are "Explore More", "Congratulations!" and "What’s Next". There are no projects. Checked October 15, 2026 (source)
- You need a Udacity account to open the lessons. Without one, we could not see the dataset, the database engine, or the lesson content. Checked October 15, 2026 (source)
- Udacity says that free courses "do not include the real-world projects" of its paid courses. Checked October 15, 2026 (source)
- Udacity lists the lesson "SQL Data Cleaning" in the course, and it names CASE in "SQL Aggregations". We found no mention of NULL values or string functions in the outline. Checked October 15, 2026 (source)
- Udacity says that in the subqueries lesson, you learn "to answer much more complex business questions". We found no named dataset and no project in the outline. Checked October 15, 2026 (source)
Udacity certificate
- Udacity gives no certificate for free courses. Udacity says: "We do not offer an option of earning a free certificate." Checked October 15, 2026 (source)
Udacity strengths and limits
- The whole course is free, and in seven SQL lessons you go from your first query to data cleaning, subqueries and window functions. Checked October 17, 2026 (source)
- With a free course, you get no certificate, no project and no mentor support, and we found no database engine on the course page. Checked October 15, 2026 (source)