Sign In Start Free Trial
Account

Add to playlist

Create a Playlist

Modal Close icon
You need to login to use this feature.
  • jOOQ Masterclass
  • Toc
  • feedback
jOOQ Masterclass

jOOQ Masterclass

By : Anghel Leonard
4.6 (5)
close
jOOQ Masterclass

jOOQ Masterclass

4.6 (5)
By: Anghel Leonard

Overview of this book

jOOQ is an excellent query builder framework that allows you to emulate database-specific SQL statements using a fluent, intuitive, and flexible DSL API. jOOQ is fully capable of handling the most complex SQL in more than 30 different database dialects. jOOQ Masterclass covers jOOQ from beginner to expert level using examples (for MySQL, PostgreSQL, SQL Server, and Oracle) that show you how jOOQ is a mature and complete solution for implementing the persistence layer. You’ll learn how to use jOOQ in Spring Boot apps as a replacement for SpringTemplate and Spring Data JPA. Next, you’ll unleash jOOQ type-safe queries and CRUD operations via jOOQ’s records, converters, bindings, types, mappers, multi-tenancy, logging, and testing. Later, the book shows you how to use jOOQ to exploit powerful SQL features such as UDTs, embeddable types, embedded keys, and more. As you progress, you’ll cover trending topics such as identifiers, batching, lazy loading, pagination, and HTTP long conversations. For implementation purposes, the jOOQ examples explained in this book are written in the Spring Boot context for Maven/Gradle against MySQL, Postgres, SQL Server, and Oracle. By the end of this book, you’ll be a jOOQ power user capable of integrating jOOQ in the most modern and sophisticated apps including enterprise apps, microservices, and so on.
Table of Contents (26 chapters)
close
1
Part 1: jOOQ as a Query Builder, SQL Executor, and Code Generator
4
Part 2: jOOQ and Queries
11
Part 3: jOOQ and More Queries
16
Part 4: jOOQ and Advanced SQL
22
Part 5: Fine-tuning jOOQ, Logging, and Testing

Using database sequences

To yield sequential numbers, databases such as PostgreSQL, SQL Server, and Oracle rely on sequences. A database sequence lives independently from tables – it can be associated with the primary key and non-primary key columns, it can be auto-generated (as in the case of PostgreSQL (BIG)SERIAL), it can be used across multiple tables, it can have independent permissions, it can have cycles, it can increment values in its own transactions to guarantee uniqueness across transactions using it, we can explicitly alter its values by setting minimum, maximum, increment, and current values, and so on.

For instance, let's consider the following sequence (employee_seq), defined in our PostgreSQL schema for the employee.employee_number primary key:

CREATE SEQUENCE "employee_seq" START 100000 INCREMENT 10 
       MINVALUE 100000 MAXVALUE 10000000 
       OWNED BY "employee...
bookmark search playlist download font-size

Change the font size

margin-width

Change margin width

day-mode

Change background colour

Close icon Search
Country selected

Close icon Your notes and bookmarks

Delete Bookmark

Modal Close icon
Are you sure you want to delete it?
Cancel
Yes, Delete