This comprehensive SQL Server Training Ebook is designed to take you from the basics of SQL to advanced topics, helping you build a solid foundation and master SQL Server. Whether you are preparing for job interviews or looking to enhance your SQL skills, this ebook provides a thorough guide to SQL Server with practical examples and interview questions for each major section.

The ebook starts by introducing the fundamental concepts of SQL, relational databases, and the importance of SQL in data management. It then dives into key SQL concepts such as SELECT statements, joins, aggregate functions, and advanced queries like subqueries and CTEs. You will also learn about error handling, transactions, stored procedures, and performance tuning techniques in SQL Server. Finally, the book includes real-world interview questions to help you prepare for SQL-related job roles.

Table of Contents:

1. Introduction to SQL

• What is SQL?
• RDBMS (Relational Database Management System)
• NoSQL vs. SQL
• Importance of SQL in Data Management
• Interview Questions

2. Basic SQL Concepts

• Understanding Databases and Tables
• SQL Server Data Types
• SQL Command Categories (DDL, DML, TCL, DCL, DQL)
• Create and Drop Database
• Schema Concepts
• Create, Drop, Alter, Update, and Truncate Tables
• SQL Constraints:
• Primary Key, Foreign Key, Identity Column, Default, Unique, Not Null, Check
• Interview Questions

3. SQL SELECT Statements

• Basic SELECT Statements: SELECT * and Selecting Specific Columns
• Filtering Data with WHERE, Logical Operators (AND, OR, NOT), LIKE, BETWEEN
• Aggregate Functions: COUNT, SUM, AVG, MAX, MIN
• Grouping Data with GROUP BY and HAVING
• Sorting Data with ORDER BY
• SQL Joins: Inner, Left, Right, Full Outer, Cross, Self-Join, Union, Union All, Intersect, Except, Merge
• Case Statements
• Interview Questions

4. SQL Joins and Relationships

• Primary and Foreign Keys
• ERD (Entity Relationship Diagrams)
• Database Normalization
• Interview Questions

5. SQL Functions and Operators

• Aggregate Functions: COUNT, SUM, AVG, MAX, MIN
• Scalar Functions: LEN, GETDATE, UPPER, LOWER
• Mathematical, String, Date, and Time Functions
• Interview Questions

6. Advanced SQL Queries

• Subqueries and Correlated Subqueries
• Common Table Expressions (CTEs)
• Recursive CTEs
• Window Functions: ROW_NUMBER, RANK, DENSE_RANK, LEAD, LAG
• Unbounding Preceding and Following
• SQL Views
• Indexes: Clustered vs Non-Clustered
• Interview Questions

7. Error Handling in SQL

• TRY-CATCH Error Handling
• Interview Questions

8. Transactions in SQL

• ACID Properties of Transactions
• Managing Transactions: BEGIN TRAN, COMMIT, ROLLBACK
• Deadlock Resolution
• WITH (NOLOCK) Usage
• Interview Questions

9. Stored Procedures and Functions

• Creating Stored Procedures
• Declaring and Using Parameters in Stored Procedures
• Debugging Stored Procedures
• Scalar and Table-Valued Functions
• Interview Questions

10. Triggers in SQL Server

• Types of Triggers
• Creating DDL and DML Triggers
• Interview Questions

11. SQL Server Performance Tuning

• Query Optimization Techniques
• Understanding Execution Plans
• Interview Questions

12. File Import and Export in SQL

• Importing Files: CSV, Excel
• Exporting Files: CSV, Excel
• Database Backup and Restore
• Interview Questions

SQL Query Interview Questions

• A comprehensive collection of SQL query-related interview questions.