Complete Roadmap to learn SQL in 2025

1. Basic Concepts

   • Understand databases and SQL.
   • Learn data types (INT, VARCHAR, DATE, etc.).

2. Basic Queries

   • SELECT: Retrieve data.
   • WHERE: Filter results.
   • ORDER BY: Sort results.
   • LIMIT: Restrict results.

3. Aggregate Functions

   • COUNT, SUM, AVG, MAX, MIN.
   • Use GROUP BY to group results.

4. Joins

   • INNER JOIN: Combine rows from two tables based on a condition.
   • LEFT JOIN: Include all rows from the left table.
   • RIGHT JOIN: Include all rows from the right table.
   • FULL OUTER JOIN: Include all rows from both tables.

5. Subqueries

   • Use nested queries for complex data retrieval.

6. Data Manipulation

   • INSERT: Add new records.
   • UPDATE: Modify existing records.
   • DELETE: Remove records.

7. Schema Management

   • CREATE TABLE: Define new tables.
   • ALTER TABLE: Modify existing tables.
   • DROP TABLE: Remove tables.

8. Indexes

   • Understand how to create and use indexes to optimize queries.

9. Views

   • Create and manage views for simplified data access.

10. Transactions

    • Learn about COMMIT and ROLLBACK for data integrity.

11. Advanced Topics

    • Stored Procedures: Automate complex tasks.
    • Triggers: Execute actions automatically based on events.
    • Normalization: Understand database design principles.

12. Practice

    • Use platforms like LeetCode, HackerRank, or learnsql for hands-on practice.

Here are some free resources to learn  & practice SQL 👇👇

SQL Resources: https://t.me/SQLResourcesTP

Udacity free course- https://techurl.in/tYrRG

For Practice- https://stratascratch.com/?via=free

SQL in 30 Days: https://t.me/SQLResourcesTP/6

Top 10 SQL Projects with Datasets: https://t.me/DataScienceResourcesTP/5

Join for more free resources: https://t.me/TechPsyche