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Learn SQL — Curriculum & Lessons

Master SQL through structured topic lessons, real-world mental models, and formative practice questions calibrated to industry certification standards.

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3 Curriculum Topics

3 Published Lessons

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Curriculum Topics & Lessons

Study instructional guides in sequence, then solidify your knowledge with targeted practice questions.

Topic 1

DML & Basic Queries

SELECT, WHERE filtering, ORDER BY, LIMIT, and arithmetic operations.

Practice (0 Qs)

Primary Guide ⏱ 15 min read • intermediate

Mastering DML & Basic Queries: Comprehensive SQL Architectural Guide

What You Will Learn Explain the logical processing order of SELECT statements and the role of the WHERE clause in row filtration Implement complex…

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Topic 2

Joins & Set Operations

INNER, LEFT, RIGHT, FULL OUTER joins, UNION, and EXCEPT.

Practice (0 Qs)

Primary Guide ⏱ 15 min read • intermediate

Mastering Joins & Set Operations: Comprehensive SQL Architectural Guide

What You Will Learn Explain how the SQL engine evaluates multi‑table inner and outer joins, including join order, predicate push‑down, and null‑preserving behavior Implement…

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Topic 3

Aggregation & Analytical Functions

GROUP BY, HAVING, COUNT/SUM/AVG, and window functions.

Practice (0 Qs)

Primary Guide ⏱ 15 min read • intermediate

Mastering Aggregation & Analytical Functions: Comprehensive SQL Architectural Guide

What You Will Learn Explain the logical and physical execution phases of ROW_NUMBER and RANK within a window specification Implement production‑grade queries that combine…

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