SQL Ke kuch basic chize sikh bidhu phele

Arre bhai, SQL seekhna hai? Ekdum mast decision liya re tu! Yeh database ka full baap hai, bina iske data ka khel adhoora hai. Le, ekdum tight list de raha hoon tereko, apun ka special SQL syllabus! 😎🔥

1. Basic SQL Commands 

SELECT – Data uthana 

INSERT – Naya data daalna

UPDATE – Purana data badalna

DELETE – Data udana 

2. SQL Joins (Ekdam solid topic) 

INNER JOIN – Common wali cheezein dikhayega

 LEFT JOIN – Left wala full data, right ka matching 

RIGHT JOIN – Right wala full data, left ka matching 

FULL JOIN – Dono side ka full paisa vasool data 

3. SQL Constraints (Rules bhai!)

PRIMARY KEY – Unique hona chahiye FOREIGN KEY – Do table ka rishta 

NOT NULL – Khali nahi chhod sakta 

UNIQUE – Duplicate allowed nahi                    

4. Aggregate Functions (Maths ka khel) 

COUNT() – Kitne rows hai 

SUM() – Total kitna hai 

AVG() – Average nikalna 

MAX() / MIN() – Sabse bada/chhota 

5. Grouping & Filtering 

GROUP BY – Data ko group karna 

HAVING – Filter maarna grouping ke baad WHERE – Data ka pehle filter 

6. Subqueries & Nested Queries 

Query ke andar aur ek query, ekdum inception scene 😆 

7. Indexing (Speed ka booster) 

CREATE INDEX – Fast access ke liye 

8. Stored Procedures & Functions

 SQL ka code store karke future mein use karne ka scene 

9. Transactions (ACID Rules Bhai!)

COMMIT – Pakka karna 

ROLLBACK – Wapas laana

SAVEPOINT – Ek point bana ke rukna 

10. Views (Shortcut Table) 

CREATE VIEW – Temporary table jaisa 

11. Normalization (Data clean aur fast) 

1NF, 2NF, 3NF – Duplicate data ka dushman 

Yeh lo bhai, ekdum short & crisp SQL ka full load. 😎💥 Koi bhi topic deep samajhna hai toh bata, tere bhai ko sab aata hai! 😆🔥