[SQL] SQL 한눈에 정리

한눈에 잘 정리된자료같아서 나중에 내가 보려고 줍줍.

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🚀 SQL Roadmap for Success 🚀

1. Beginner Level: 🌱

• Learn basic SQL syntax: SELECT, FROM, WHERE.

• Understand data types and NULL values.

• Practice simple queries on sample datasets.

2. Intermediate Level: 📊

• Dive into JOINs: INNER, LEFT, RIGHT, FULL.

• Master GROUP BY and aggregate functions.

• Explore subqueries and data manipulation.

3. Advanced Level: 📈

• Grasp window functions for advanced analytics.

• Learn about indexes and query optimization.

• Tackle complex queries with multiple JOINs.

4. Expert Level: 🧠

• Study stored procedures and triggers.

• Delve into performance tuning.

• Understand database design principles.

5. Real-world Applications: 🌐

• Work on real projects to apply skills.

• Collaborate with data teams for insights.

• Stay updated with new SQL features.

from: https://twitter.com/AmigosCode/status/1693542349429686557