This complete SQL course is carefully designed to build strong database fundamentals and advanced SQL expertise, followed by focused interview preparation for Data Engineer roles. The course is structured step by step so learners can clearly understand each concept and apply it confidently in real-world scenarios. The course begins with SQL fundamentals and gradually moves toward advanced analytical concepts and interview-level problem solving. Every topic is explained with clarity, practical demonstrations, and real examples to ensure strong conceptual and hands-on learning.
Course Content Overview:
1. SQL & Database Fundamentals
- SQL Introduction and SQL Server Installation
- Understanding Databases, Database Concepts, and Types
- Practical Database Demonstration
2. Core SQL Data Manipulation
- INSERT Statement in SQL
- Constraints in SQL
- NOT NULL and UNIQUE Constraints
- CHECK and DEFAULT Constraints
- PRIMARY KEY in SQL
- FOREIGN KEY in SQL
3. Data Filtering, Sorting & Modification
- FILTER and SORT in SQL
- DELETE vs DROP vs TRUNCATE
- UPDATE Statement in SQL
- Conditional Statements using AND, OR, IN
4. Data Analysis & Aggregation
- Aggregate Functions in SQL
- GROUP BY Clause
- LIKE Operator
- HAVING Clause
- TOP or LIMIT
- DISTINCT Keyword
- COALESCE Function
5. Advanced Querying & Joins
- Complete SQL JOINS with Practical Examples
- UNION vs UNION ALL
- ALTER Statement
- Window Functions and Aggregate Window Functions
- RANK, DENSE_RANK, ROW_NUMBER Analytical Functions
- LEAD and LAG Functions
6. Advanced SQL Concepts
- Common Table Expressions (CTE) using WITH Clause
- SQL VIEWS
- Stored Procedures using CREATE PROCEDURE
- Subqueries with Examples
- SQL Triggers with Real-Life Use Cases
7. Data Engineer Interview Preparation
- SQL Interview Questions and Answers – Part 1
- SQL Interview Questions and Answers – Part 2
- Data Engineer SQL Interview Questions – Part 3
- Important SQL Interview Questions
- Most Asked SQL Interview Questions for Data Engineers
- Python Interview Questions for Data Engineers
- Python Coding Questions for Data Engineer Interviews
- Important SQL Interview Questions – Advanced Level
- SQL Interview Question: Fill Null Values with Previous Value
- Advanced SQL Interview Question – Final Practice
Why This Course?
This course is ideal for learners who want a complete SQL roadmap in one place. From database basics to advanced SQL queries, analytical functions, and real interview questions, everything is covered in a structured and practical manner. By the end of the course, you will be able to confidently write optimized SQL queries, work with complex datasets, and successfully prepare for SQL and Data Engineer interviews.
