How to map Date and Timestamp with JPA and Hibernate

Introduction In this article, I’m going to show you what is the best way to map date and timestamp column types when using JPA and Hibernate. While there are many options to map date and timestamp columns on the Java side, as you will soon see, not all of them are suitable.

High-Performance Java Persistence Newsletter, Issue 8

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system from Java.

SQL INNER JOIN – A Beginner’s Guide

Introduction In this article, we are going to see how INNER JOIN works in SQL, and how we can use it to associate rows belonging to different tables and build compound result sets.

High-Performance Java Persistence Newsletter, Issue 6

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system from Java.

High-Performance Java Persistence Newsletter, Issue 5

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system from Java.

High-Performance Java Persistence Newsletter, Issue 4

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system from Java.

High-Performance Java Persistence Newsletter, Issue 2

Introduction Welcome to a new issue of the High-Performance Java Persistence Newsletter in which we share articles, videos, workshops, and StackOverflow answers that are very relevant to any developer who interacts with a database system from Java.

SQL EXISTS and NOT EXISTS

Introduction In this article, we are going to see how the SQL EXISTS operator works and when you should use it. Although the EXISTS operator has been available since SQL:86, the very first edition of the SQL Standard, I found that there are still many application developers who don’t realize how powerful SQL subquery expressions really are when it comes to filtering a given table based on a condition evaluated on a different table.

SQL CROSS JOIN – A Beginner’s Guide

Introduction In this article, we are going to see how a CROSS JOIN works, and we will also make use of this SQL join type to build a poker card game.

Spring Boot performance tuning

Introduction While developing a Spring Boot application is rather easy, tuning the performance of a Spring Boot application is a more challenging task, as, not only it requires you to understand how the Spring framework works behind the scenes, but you have to know what is the best way to use the underlying data access framework, like Hibernate for instance. In a previous article, I showed you how easily to optimize the performance of the Petclinic demo application. However, by default, the Petclinic Spring Boot application uses the in-memory HSQLDB database, which… Read More