Book Image

Oracle SQL Developer 2.1

By : Susan Harper
Book Image

Oracle SQL Developer 2.1

By: Susan Harper

Overview of this book

As technology rapidly evolves, many developers are looking for valuable tools to assist them with their daily tasks. When dealing with databases, a clean, easy-to-navigate interface for working and browsing is essential. Oracle SQL Developer is a graphical user interface that makes life much easier by allowing you to browse database objects, run SQL statements and scripts, and create, edit, and debug PL/SQL statements in the most efficient way. It enhances productivity and simplifies your database development tasks. Although the SQL Developer journey looks simple and easy, there are many areas that can go undiscovered, leaving you just scratching the surface. It's easy to get started and master this powerful tool with this book to hand. It will provide you with in-depth details about all aspects of using SQL Developer to assist you in your day-to-day database tasks and activities. You will learn to utilize SQL Developer's extensible environment to support your ongoing needs This book offers detailed instructions for installing, configuring, and effectively using Oracle SQL Developer. You will learn how to utilize every feature of this development tool and make the most out of it. While none of the tasks are complex, the book progresses from the easy, most commonly used features, such as browsing objects and writing queries in the SQL Worksheet, to the more involved and possibly less frequently used features, such as Tuning and Testing SQL and PL/SQL, and adding User Extensions, and finally to those features used by a smaller more targeted audience, such as Migrations, Oracle APEX, and the Data Modeler. Throughout the book there are tips and suggestions gathered as a result of working with the current SQL Developer user base. This book will also show you how to assess the health of your database with built-in as well as customized reports. By the end of the book you will be confident in making the best use of SQL Developer, and be able to set up and maintain a productive environment for quick and easy database development.
Table of Contents (19 chapters)
Oracle SQL Developer 2.1
Credits
About the Author
Acknowledgement
About the Reviewers
Preface
12
Working with Application Express

Writing and executing commands


In this section, we will review the variety of commands you can enter in the SQL Worksheet and how to execute them. We'll start by looking at the SQL*Plus support within the worksheet and then move onto SQL commands. You'll see as we work that we use SQL*Plus, SQL, and PL/SQL commands or statements, and generally that's how you work with them in daily practice.

Writing your first statements

Immediately above the worksheet is a set of buttons. The first, Run Statement or F9, is generally for executing single statements, while the second, Run Script or F5, is for running scripts, single or multiple statements, and a blend of SQL, SQL*Plus, and PL/SQL commands.

Using an open SQL Worksheet for your HR connection, enter the following statements:

SELECT * FROM EMPLOYEES;
SELECT * FROM DEPARTMENTS;
SELECT * FROM COUNTRIES;

With the cursor on one line of code, press F9 first and then the F5 key. Notice that the F9 key shows a set of results in a data grid for selected...