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Beginning SQL Queries

  • Kartonierter Einband
  • 234 Seiten
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Tagline: A thoughtful approach to learning about SQL that helps you think about the language--and about your data--so that you can... Weiterlesen
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Beschreibung

Tagline: A thoughtful approach to learning about SQL that helps you think about the language--and about your data--so that you can apply the right operations to the right problem to generate the right results, every time.

Beginning Queries with SQL is a friendly and easily read guide to writing queries with the all-important - in the database world - SQL language. Anyone who does any work at all with databases needs to know something of SQL, and that is evidenced by the strong sales of such books as Learning SQL (O'Reilly) and SQL Queries for Mere Mortals (Pearson). Beginning Queries with SQL is written by the author of Beginning Database Design, an author who is garnering great reviews on Amazon due to the clarity and succinctness of her writing.


Autorentext
Clare 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.

Klappentext

Get 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.

  • Write simple queries to extract data from 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




Inhalt
1. Relational Database Overview
2. Simple Queries on One Table
3. A First Look at Joins
4. Nested Queries
5. Self Joins
6. Multiple Relationships Between Tables
7. Set Operations
8. Aggregate Operations
9. Windown Function
10. Efficiency Considerations
11. Approaching A Query
12. Common Problems
13. Appendix 1: Sample Database
14. Appendix 2: Relational Notation 

Produktinformationen

Titel: Beginning SQL Queries
Untertitel: From Novice to Professional
Autor:
EAN: 9781484219546
ISBN: 978-1-4842-1954-6
Format: Kartonierter Einband
Herausgeber: Springer, Berlin
Genre: Informatik
Anzahl Seiten: 234
Gewicht: 498g
Größe: H17mm x B255mm x T167mm
Jahr: 2016
Auflage: 2. Aufl.