How to Learn SQL

There are 5 components of SQL language:

1. DDL - Data Definition Language: CREATE/ DROP/ ALTER
2. DQL - Data Query Language: SELECT
3. DML - Data Manipulation Language: INSERT/ UPDATE/ DELETE
4. DCL - Data Control Language: GRANT/ REVOKE
5. TCL - Transaction Control Language: START/ COMMIT/ ROLLBACK

Để code BE thì cần biết hết các components trên. Để làm Data Analyst thì cần focus vào DQL.

Links

• https://blog.bytebytego.com/i/111973267/what-is-the-best-way-to-learn-sql