About this ebook
This book covers everything you need to get started with SQL, from basic commands to more advanced queries. It begins with the fundamentals — understanding databases, tables, and how to write simple queries — and gradually moves into topics like joins, sub-queries, and stored procedures. Whether you're just starting out or looking to sharpen your skills, SQL - Command Your Computer is a practical and accessible resource to help you become confident with SQL.
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About the author
RJ Raawat is a technologist, social thinker, and environmental advocate who works at the intersection of innovation and responsibility. As a Designated Partner and Principal Scientist in Software R&D at WENGS Solutions LLP, a DPIIT-recognized startup under the Government of India, he contributes to building technology that is not only functional, but meaningful.
Beyond the corporate sphere, he serves as the Managing Trustee and President of The Samajh, a public trust registered under the Indian Trust Act of 1882. Through this platform, he founded Leaf Bank, an environmental initiative focused on encouraging community participation in sustainability and responsible waste practices. His work reflects a belief that real change begins with awareness, collective effort, and consistent action.
An author of educational books on subjects such as HTML, CSS, and SQL Server, RJ Raawat views knowledge as a shared resource. He remains committed to simplifying technology and making it accessible to learners and aspiring professionals.
Originally from the Pauri Garhwal region of Uttarakhand, his roots continue to shape his worldview, grounded in nature, discipline, and service. Whether in software research or social initiatives, his approach remains guided by long-term thinking, ethical responsibility, and the conviction that progress must walk hand in hand with sustainability.
RJ Raawat’s journey reflects a quiet dedication to building systems, technological and social, that aim to leave a positive and lasting impact.
