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OverviewGet started on mastering the one language binding the entire database industry. That language is SQL, and how it works is must-have knowledge for anyone involved with relational databases, and surprisingly also for anyone involved with NoSQL databases. SQL is universally used in querying and reporting on large data sets in order to generate knowledge to drive business decisions. Good knowledge of SQL is crucial to anyone working with databases, because it is with SQL that you retrieve data, manipulate data, and generate business results. Every relational database supports SQL for its expressiveness in writing queries underlying reports and business intelligence dashboards. Knowing how to write good queries is the foundation for all work done in SQL, and it is a foundation that Clare Churcher's book, Beginning SQL Queries, 2nd Edition, lays well. What You Will Learn Write simple queries to extract datafrom a single table Combine data from many tables into one business result using set operations Translate natural language questions into database queries providing meaningful information to the business Avoid errors associated with duplicated and null values Summarize data with amazing ease using the newly-added feature of window functions Tackle tricky queries with confidence that you are generating correct results Investigate and understand the effects of indexes on the efficiency of queries Who This Book Is For Beginning SQL Queries, 2nd Edition is aimed at intelligent laypeople who need to extract information from a database, and at developers and other IT professionals who are new to SQL. The book is especially useful for business intelligence analysts who must ask more complex questions of their database than their GUI–based reportingsoftware supports. Such people might be business owners wanting to target specific customers, scientists and students needing to extract subsets of their research data, or end users wanting to make the best use of databases for their clubs and societies. Full Product DetailsAuthor: Clare ChurcherPublisher: APress Imprint: APress Edition: 2nd ed. Dimensions: Width: 17.80cm , Height: 1.40cm , Length: 25.40cm Weight: 4.946kg ISBN: 9781484219546ISBN 10: 1484219546 Pages: 234 Publication Date: 07 July 2016 Audience: Professional and scholarly , Professional & Vocational Format: Paperback Publisher's Status: Active Availability: In Print  This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us. Table of Contents1. Relational Database Overview2. Simple Queries on One Table3. A First Look at Joins4. Nested Queries5. Self Joins6. Multiple Relationships Between Tables7. Set Operations8. Aggregate Operations9. Windown Function10. Efficiency Considerations11. Approaching A Query12. Common Problems13. Appendix 1: Sample Database14. Appendix 2: Relational NotationReviewsAuthor InformationClare Churcher (B.Sc. (Hons), Ph.D.(physics)) has designed several databases for a variety of large and small projects. She is a currently a Senior Lecturer and Development Manager for Applied IT at Tai Poutini Polytechnic. She spent two years as a Business Analyst for a large international software development company, and prior to that nearly two decades as a senior faculty member of the Applied Computing Group at Lincoln University where her teaching included Analysis and Design, Database, and Programming papers. In 2006 she won a Lincoln University Excellence in Teaching Award. She has supervised over 70 undergraduate projects designing databases for small projects. Tab Content 6Author Website:Countries AvailableAll regions |
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