SQL: From Basic to Advanced Concepts

🔹 Basic SQL Concepts

✅ Introduction to SQL & Databases

• What is SQL?
• Types of Databases (Relational vs. Non-Relational)
• Setting Up SQL Environment (MySQL, PostgreSQL, SQLite)

✅ Basic Querying & Data Retrieval

• SELECT Statement (Retrieving Data)
• Filtering with WHERE, LIKE, IN, BETWEEN
• Sorting Data (ORDER BY)
• Using DISTINCT to Remove Duplicates

✅ Data Aggregation & Grouping

• COUNT, SUM, AVG, MIN, MAX
• GROUP BY & HAVING Clauses

✅ Working with Multiple Tables

• Primary & Foreign Keys
• JOINs: INNER, LEFT, RIGHT, FULL
• UNION & UNION ALL

🔹 Intermediate SQL Concepts

✅ Modifying Data & Transactions

• INSERT, UPDATE, DELETE Commands
• Transactions & ACID Properties
• COMMIT & ROLLBACK

✅ Advanced Filtering & Functions

• CASE Statement (Conditional Logic)
• COALESCE & NULL Handling
• Subqueries & Nested Queries
• EXISTS & NOT EXISTS

✅ Indexes & Performance Optimization

• Indexing for Faster Queries
• EXPLAIN & Query Optimization
• Normalization & Denormalization

🔹 Advanced SQL Concepts

✅ Advanced Joins & Set Operations

• Self JOIN, CROSS JOIN
• INTERSECT & EXCEPT

✅ Stored Procedures & Triggers

• Creating and Using Stored Procedures
• Triggers for Automating Tasks

✅ Views & Common Table Expressions (CTEs)

• Creating & Using Views
• Recursive CTEs

✅ Window Functions & Analytical Queries

• RANK(), DENSE_RANK(), ROW_NUMBER()
• LEAD() & LAG() for Data Trends
• PARTITION BY for Advanced Aggregations

✅ Working with JSON & NoSQL in SQL

• Handling JSON Data in SQL
• Integrating SQL with NoSQL Databases