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Beginner's Guide to SQL

These tutorials will provide you with a solid foundation in SQL and prepare you for your career goals.

  • What is SQL?
  • History and Evolution of SQL 
  • Why Use SQL?
  • Types of Databases: Relational vs Non-Relational
  • SQL Standards and Variants (MySQL, PostgreSQL, SQL Server, Oracle, SQLite) 
  • Role of SQL in Data Analysis and Development
  • Database Concepts
  • Tables, Rows, and Columns 
  • Primary Keys and Foreign Keys 
  • Data Types in SQL
  • Writing Basic SQL Queries 
  • Using SELECT Statements
  • Filtering Data with WHERE Clause 
  • Sorting Results with ORDER BY 
  • Removing Duplicates with DISTINCT
  • Inserting Data into Tables (INSERT)
  •  Updating Records in a Table (UPDATE) 
  • Deleting Records from a Table (DELETE) 
  • Bulk Operations in SQL
  • Creating Databases and Tables (CREATE) 
  • Altering Table Structure (ALTER)
  • Dropping Tables and Databases (DROP) 
  • Truncating Tables (TRUNCATE) 
  • Constraints in SQL
  • Primary Key, Foreign Key
  • Unique, Not Null, Check Constraints
  • Using JOIN Operations 
  • Inner Join
  • Left (Outer) Join 
  • Right (Outer) Join 
  • Full (Outer) Join 
  • Cross Join
  • Subqueries and Nested Queries
  • Using Aggregate Functions (SUM, AVG, COUNT, MIN, MAX) 
  • Grouping Data with GROUP BY
  • Filtering Groups with HAVING Clause
  • Window Functions
  • ROW_NUMBER, RANK, DENSE_RANK
  • Aggregate Functions Over a Partition (OVER) 
  • Common Table Expressions (CTEs)
  • Recursive Queries
  • Views in SQL
  • Stored Procedures and Functions 
  • Indexing and Performance Optimization
  • Analytical Queries and Patterns
  • Calculating Running Totals and Moving Averages 
  • Working with Time and Date Functions
  • Handling Null Values
  • Writing Complex Queries for Data Extraction
  • User Roles and Permissions (GRANT, REVOKE) 
  • Backing Up and Restoring Databases 
  • Transactions in SQL
  • BEGIN, COMMIT, ROLLBACK
  • ACID Properties
  • Locking Mechanisms and Concurrency Control
  • String Functions (CONCAT, SUBSTRING, LENGTH) 
  • Numeric Functions (ROUND, ABS, CEIL)
  • Date and Time Functions (NOW, DATEDIFF, DATEPART) 
  • Conversion Functions (CAST, CONVERT)
  • Conditional Functions (CASE, COALESCE)
  • Understanding Query Execution Plans
  • Optimizing Queries for Performance
  • Indexing Best Practices
  • Normalization and Denormalization 
  • Partitioning Tables and Indexes
  • Connecting SQL to Programming Languages (Python, Java) 
  • Using SQL with BI Tools (Tableau, Power BI)
  • Importing and Exporting Data
  • Working with APIs for Database Operations

Designing a Library Management System Building an E-commerce Database

 

Creating an Employee Management System Analyzing Sales Data with Advanced SQL Queries Building a Data Pipeline Using SQL

  • Installing and Setting Up SQL Environments 
  • Working with MySQL Workbench
  • Using pgAdmin for PostgreSQL
  • SQL Server Management Studio (SSMS) Basics 
  • Online SQL Tools: SQLite, DB Fiddle

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