📊 JPQL - Java Persistence Query Language

Master Object-Oriented Database Queries

From basic CRUD to complex joins with JPQL

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🎯 About

This repository contains projects demonstrating JPQL (Java Persistence Query Language) - an object-oriented query language for JPA entities.

📁 Projects

Project	Focus
BasicCRUD	Fundamental JPQL operations
basic	Advanced queries and joins

💡 JPQL vs SQL

-- SQL (Table-based)
SELECT * FROM users WHERE age > 25

-- JPQL (Object-based)
SELECT u FROM User u WHERE u.age > 25

📚 Topics Covered

• ✅ SELECT, UPDATE, DELETE queries
• ✅ WHERE clauses and conditions
• ✅ JOIN operations (INNER, LEFT, RIGHT)
• ✅ Aggregate functions (COUNT, SUM, AVG)
• ✅ Named queries and parameters

🛠️ Technologies

Java | JPA | Hibernate | MySQL | Maven

📬 Contact

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Keywords: JPQL JPA Hibernate Java Database Query ORM Entity-Manager Persistence