Free Computer, Mathematics, Technical Books and Lecture Notes, etc.
This resource is a practical step-by-step guide to writing SQL.
Teach yourself SQL - the easy way! You'll learn how to make the most of your data using best-practice SQL code. Rather than bore you with theory, it focuses on the practical use of SQL with common databases and uses plenty of diagrams, easy-to-read text, and examples to help make learning SQL easy and fun.
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