Learn SQL in a course built only for you. And actually retain it.
Go from spreadsheet exports to writing your own production queries: joins, aggregations, window functions, and the query patterns behind real business reporting.
Free to start · no account needed
Built around your goal, not a catalog
What your course could open with
lrnit interviews you first (what you know, why you’re learning, how you think), then generates every lesson for that. Sample lessons from a course like yours:
Measured, not watched
By the end, you’ll be able to
- Answer your own data questions without waiting on engineering
- Write joins and window functions that are correct, not just plausible
- Build reporting queries your team re-runs every week
What a capability check looks likebeforenow
Write a multi-table join+65
Use window functions+66
Build a cohort query+66
Every lesson ends in assessment. Mastery is tracked per concept with spaced review, and the course adapts to what you actually retain. Finishing means a timed final exam and a verifiable certificate, not a completion badge.
“It felt like the course already knew what I did for a living.”
Questions people ask
- Do I need to have written code before?
- No. It starts from a single SELECT and the mental model of how a query reads a table, then builds to joins and window functions at a pace that assumes you have never coded.
- Which database does it teach?
- The SQL is standard and portable across Postgres, MySQL, BigQuery, and Snowflake. Where dialects differ, the course flags it.
- Will I be able to write real reporting queries by the end?
- Yes. It works up to cohort and retention queries you can re-run on your own data, and every lesson checks your queries are correct, not just plausible.
Your version of this course doesn’t exist yet.
Free to start · no account needed
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