Master SQL CRUD Operations & Filtering

Master SQL CRUD Operations & Filtering

Build powerful, efficient database queries. Learn to create, read, update, and delete data with precision using SQL. Master filtering, sorting, and logical operators for real-world reporting.

Data Manipulation
Precise Filtering
Real-World Queries
-- Complete CRUD & Filtering Example
-- CREATE: Insert a new employee
INSERT INTO employees (name, department, salary, hire_date)
VALUES ('Jane Smith', 'Engineering', 85000.00, '2024-01-15');

-- READ: Filter with conditions and sorting
SELECT name, department, salary
FROM employees
WHERE department = 'Engineering'
AND salary > 70000
ORDER BY salary DESC;

-- UPDATE: Modify with precise conditions
UPDATE employees
SET salary = salary * 1.1
WHERE department = 'Engineering'
AND hire_date < '2023-01-01';

-- DELETE: Remove records safely
DELETE FROM employees
WHERE department = 'Temp'
AND hire_date < '2022-01-01';

Module: CRUD Operations

Master the fundamental operations for managing data in relational databases

1

Introduction to CRUD

  • What is SELECT?
  • Using SELECT with conditions
  • INSERT – Adding new records
  • UPDATE – Modifying existing data
  • DELETE – Removing records safely
2

Best Practices & Examples

  • Transaction management
  • Data validation before operations
  • Using WHERE clauses effectively
  • Error handling strategies
  • Real-world CRUD examples

SQL Core Concepts

Understand the essential concepts that make SQL powerful for data manipulation

🔍

Data Filtering

Precisely target data using WHERE clauses and conditions

↕️

Sorting & Ordering

Organize query results meaningfully with ORDER BY

🧮

Logical Operations

Combine conditions with AND, OR, NOT for complex queries

Module: Filtering, Sorting & Operators

Learn to extract precise information with advanced SQL techniques

3

Filtering Fundamentals

  • WHERE clause basics
  • Comparison operators (=, <>, >, <, BETWEEN)
  • Logical operators (AND, OR, NOT)
  • Pattern matching using LIKE
4

Advanced Data Control

  • Sorting results using ORDER BY
  • Limiting data with LIMIT / TOP
  • Combining filtering + sorting effectively
  • Real-time examples of reporting queries

Practical Projects

Apply your skills to build real-world database solutions

E-Commerce Inventory System

Build a complete inventory management system with advanced reporting:

  • Product CRUD operations with categories
  • Stock level filtering and alerts
  • Sales reporting with date ranges
  • Customer purchase history queries

Employee Management Dashboard

Create HR dashboard with comprehensive employee data:

  • Employee directory with search filters
  • Department performance reports
  • Salary range analysis
  • Hire date anniversary tracking

Database Platforms

Apply your SQL skills across popular database systems

MySQL

World’s most popular open-source database

PostgreSQL

Advanced open-source object-relational system

SQL Server

Microsoft’s enterprise database solution

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