CadetX
CadetX
CX Learn
SQL for Data Analytics
Database & Analytics

Learn SQL Online Free: Interactive Course for Beginners with Certificate

Learn SQL by writing real queries, not just reading about them. This free, self-paced course takes you from the basics to window functions through 15 autograded modules that run in your browser on a built-in SQLite database. You'll work through relational databases, aggregations, multi-table joins, subqueries, CASE expressions, window functions and views, with instant feedback on every query and a free, verifiable certificate when you pass the exam.

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This is presented toCadetX StudentFor completing SQL for Data Analytics course
Batch: CX-SQL_01Date: 2 Nov 2026
Certificate Included

Course Curriculum

15 interactive lessons with real-time autograding

1
Module 1

Introduction to SQL

Relational database concepts, tables, schemas, and basic queries.

2
Module 2

SELECT & DISTINCT

Retrieving specific columns, aliasing, and unique row extraction.

3
Module 3

WHERE, AND, OR, NOT

Filtering records with logical conditions and comparison operators.

4
Module 4

ORDER BY & NULL Values

Sorting results ascending/descending, handling NULLs with IS NULL.

5
Module 5

INSERT, UPDATE, DELETE

Data manipulation commands, transaction basics, and row changes.

6
Module 6

SELECT TOP & LIMIT

Paging results, offset fetch, and row limiting strategies.

7
Module 7

Aggregate Functions

COUNT, SUM, AVG, MIN, MAX calculations across records.

8
Module 8

LIKE, IN & BETWEEN

Wildcard text matching, membership testing, and range filtering.

9
Module 9

Joins

INNER, LEFT, RIGHT, and FULL OUTER joins across related tables.

10
Module 10

UNION, GROUP BY & HAVING

Set unions, multi-column grouping, and aggregated post-filters.

11
Module 11

EXISTS, ANY, ALL & Subqueries

Correlated subqueries, scalar subqueries, and EXISTS tests.

12
Module 12

CASE & NULL Functions

Conditional branching logic with CASE WHEN, COALESCE, and IFNULL.

13
Module 13

Databases & Tables

DDL operations: CREATE, ALTER, DROP, and data types.

14
Module 14

Constraints & Keys

PRIMARY KEY, FOREIGN KEY, UNIQUE, NOT NULL, and CHECK constraints.

15
Module 15

Indexes, Views, Dates & Security

Query indexing, virtual views, date functions, and query optimization.