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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.
Introduction to SQL
- 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
SQL Basics
- 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
Data Manipulation in SQL (DML)
- Inserting Data into Tables (INSERT)
- Updating Records in a Table (UPDATE)
- Deleting Records from a Table (DELETE)
- Bulk Operations in SQL
Data Definition in SQL (DDL)
- 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
Querying Data in SQL
- 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
Advanced SQL
- 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
SQL for Data Analysis
- 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
SQL for Database Management
- User Roles and Permissions (GRANT, REVOKE)
- Backing Up and Restoring Databases
- Transactions in SQL
- BEGIN, COMMIT, ROLLBACK
- ACID Properties
- Locking Mechanisms and Concurrency Control
SQL Functions
- 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)
SQL Performance Tuning
- Understanding Query Execution Plans
- Optimizing Queries for Performance
- Indexing Best Practices
- Normalization and Denormalization
- Partitioning Tables and Indexes
SQL and Integration
- 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
Hands-On Projects
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
Tools and Platforms
- 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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