✅ SQL Skills Every Data Analyst Must Know 🗄️📊

🧠 SQL BASICS
1. SELECT Statement
2. WHERE Clause
3. ORDER BY
4. LIMIT / TOP
5. DISTINCT
6. Aliases
7. Basic Syntax Rules
8. Filtering Data

🔗 JOINS
1. INNER JOIN
2. LEFT JOIN
3. RIGHT JOIN
4. FULL JOIN
5. SELF JOIN
6. Cross Join
7. Joining Multiple Tables
8. Handling NULLs in Joins

📊 AGGREGATIONS
1. COUNT()
2. SUM()
3. AVG()
4. MIN()
5. MAX()
6. GROUP BY
7. HAVING Clause
8. Conditional Aggregation

⚙️ ADVANCED SQL
1. Subqueries
2. Common Table Expressions (CTE)
3. Window Functions
4. CASE WHEN
5. Views
6. Temporary Tables
7. Stored Procedures
8. Indexing Basics

📂 DATA MANIPULATION
1. INSERT
2. UPDATE
3. DELETE
4. MERGE
5. TRUNCATE
6. Data Import
7. Data Export
8. Transactions (COMMIT, ROLLBACK)

🚀 PERFORMANCE OPTIMIZATION
1. Indexing
2. Query Optimization
3. Execution Plans
4. Avoiding Full Table Scans
5. Partitioning
6. Query Refactoring
7. Caching
8. Database Tuning

🧱 DATABASE CONCEPTS
1. Normalization
2. Denormalization
3. OLTP vs OLAP
4. Data Warehousing
5. Star Snowflake Schema
6. Constraints (PK, FK)
7. ACID Properties
8. Data Integrity

📊 REAL-WORLD SKILLS
1. Writing Business Queries
2. Data Cleaning using SQL
3. Report Generation
4. Dashboard Data Prep
5. Handling Large Datasets
6. Debugging Queries
7. Interview Problem Solving
8. Case Study Practice

SQL For Data Analytics: https://whatsapp.com/channel/0029Vb6hJmM9hXFCWNtQX944

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