What youHeroturko??™ll learn

• Write simple queries to extract data from a single table.
• Understand relational algebra and calculus and why they are important.
• Combine data from many tables into one business result.
• Avoid pitfalls and traps such as Cartesian products and difficulties with null values.
• Summarize large amounts of data for reporting purposes.
• Apply set theory to the problems of manipulating data and generating reports.

Who is this book for?

Beginning SQL Queries is aimed at intelligent laypeople who need to extract information from a database, and at developers and other IT people 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 GUIHeroturko??“based reporting software 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.