SQL Extended Practice

Window analytics, query maintenance and safe recursive hierarchy traversal. 63 cumulative lessons.

What you will be able to do

• Window analytics, query maintenance and safe recursive hierarchy traversal.
• Verify results on ordinary, missing-value and boundary data.

Included

This course includes Introduction, Foundations, Complete Course. Your progress carries over.

Access terms

Pay what you want, including nothing. Includes earlier SQL packages. Test checkout: no real charge is taken yet.

Every lesson can be read and checked without a payment. Passing the checks shows you what you can do; it does not certify a grade.