SQL from zero
Read and write relational data: SELECT, filtering, joins, grouping and changing rows, with queries you can type.
- 1SELECT, WHERE and ORDER BYTables, rows and columns, and how to pick and filter them.9 min
- 2Counting and groupingCOUNT, SUM, AVG and GROUP BY to summarize data.9 min
- 3Joining tablesPrimary and foreign keys, INNER and LEFT JOIN.10 min
- 4INSERT, UPDATE and DELETEChange data safely, with transactions and injection in mind.8 min
Your certificate
Finish all 4 lessons, passing every exercise, to unlock your certificate of completion.
You completed SQL from zero. Put your name on a certificate you can download and share.
Your name is used only in your browser to draw the certificate. It is never sent to us.
Share your achievement
Post it and tag the creator. Pick a network to get the text with the right mention.
This is a self-paced completion certificate. Your browser issues it when you pass the exercises. It is not an accredited qualification or a verified credential.