SQL From Basics to Advanced

1. Introduction to SQL

• 1.1 Overview of SQL: What, Why, and How
• 1.2 Understanding Databases: Relational vs. Non-Relational
• 1.3 Setting Up SQL Environment: Installing SQL Server & Tools
• 1.4 Basic SQL Syntax & Structure

2. Basic SQL Commands

• 2.1 SELECT Statement: Retrieving Data from Tables
  • Basic SELECT Queries
  • SELECT with WHERE Clause
• 2.2 Filtering Data
  • WHERE, AND, OR, NOT Conditions
  • LIKE, IN, BETWEEN Operators
• 2.3 Sorting Data
  • ORDER BY: Ascending and Descending Order
• 2.4 Aggregation Functions
  • COUNT, SUM, AVG, MIN, MAX
• 2.5 Grouping Data
  • GROUP BY and HAVING Clause
• 2.6 SQL Aliases
  • Column and Table Aliases

3. Intermediate SQL Concepts

• 3.1 SQL Joins
  • INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN
• 3.2 Subqueries
  • Types of Subqueries: Single-row, Multi-row, Correlated Subqueries
• 3.3 Set Operations
  • UNION, INTERSECT, EXCEPT
• 3.4 Advanced Filtering
  • EXISTS, ANY, ALL Operators
• 3.5 String Functions in SQL
  • CONCAT, SUBSTRING, REPLACE, TRIM, LENGTH
• 3.6 Date & Time Functions
  • CURRENT_DATE, DATEDIFF, DATEADD, CONVERT

4. Advanced SQL Techniques

• 4.1 Advanced Joins
  • CROSS JOIN, Self Join, Recursive Joins
• 4.2 Window Functions
  • ROW_NUMBER, RANK, DENSE_RANK, LEAD, LAG
• 4.3 Common Table Expressions (CTE)
  • Recursive & Non-Recursive CTEs
• 4.4 Transactions & ACID Properties
  • COMMIT, ROLLBACK, SAVEPOINT
• 4.5 Indexes in SQL
  • Clustered vs. Non-Clustered Indexes
• 4.6 Views in SQL
  • Creating, Updating, and Deleting Views

5. Database Design & Optimization

• 5.1 Database Normalization
  • Normal Forms: 1NF, 2NF, 3NF, BCNF
• 5.2 Denormalization
  • When & How to Denormalize
• 5.3 Optimizing SQL Queries
  • Analyzing Query Plans, Index Optimization
• 5.4 Handling Large Datasets
  • Partitioning Tables, Archiving Data
• 5.5 SQL Performance Tuning
  • Index Tuning, Query Refactoring

6. Specialized SQL Topics for Job Preparation

• 6.1 Advanced SQL Functions
  • CASE, COALESCE, NULLIF
• 6.2 Triggers in SQL
  • Creating & Managing Triggers
• 6.3 Stored Procedures & Functions
  • Writing and Using Stored Procedures
• 6.4 Error Handling in SQL
  • TRY-CATCH, Custom Error Messages
• 6.5 Data Security in SQL
  • User Roles, Permissions, Data Encryption

7. SQL for Data Analysis & Reporting

• 7.1 Advanced Data Analysis in SQL
  • Pivot Tables, Rollup, Cube
• 7.2 Reporting with SQL
  • Generating Reports, Connecting SQL to BI Tools
• 7.3 SQL for Business Intelligence (BI)
  • Data Warehousing Concepts

8. Mock Interview Practice & Real-world Applications

• 8.1 Solving Real Interview Problems with SQL
• 8.2 Case Studies: Real-world Database Solutions
• 8.3 SQL Challenges & Contests
• 8.4 Top 50 SQL Interview Questions

9. Additional Resources & Learning Path

• 9.1 Recommended SQL Practice Platforms
  • LeetCode, HackerRank, Mode Analytics
• 9.2 SQL Code Optimization Best Practices
• 9.3 Career & Interview Preparation Tips for MNCs