Post #1865

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 For Data Analysis: https://t.me/sqlanalyst For Practice- https://stratascratch.com/?via=free SQL Learning Series: https://t.me/sqlspecialist/567 Top 10 SQL Projects with Datasets: https://t.me/DataPortfolio/16 Join for more free resources: https://t.me/free4unow_backup ENJOY LEARNING👍👍