PostgreSQL Query Optimization: The Ultimate Guide to Building Efficient Queries - Henrietta Dombrovskaya

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• Brand: Henrietta Dombrovskaya
• Categoria: Computers
• Magazin: libris.ro
• Ultima actualizare: 11-04-2024 01:14:23

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Descriere magazin:
Write optimized queries. This book helps you write queries that perform fast and deliver results on time. You will see that query optimization is not a magic art available only to a limited circle of wizards. Any motivated professional can learn to write efficient queries and become competent in optimizing them. You will learn to look at the process of writing a query from the database engine\'s point of view, and how to think like a database optimizer. The book starts with a discussion of what is a performant system and progresses to measuring performance and setting performance goals. You will be introduced to different classes of queries and to suitable optimization techniques such as the use of indexes and specific join algorithms. You will learn to read and understand query execution plans along with techniques for influencing those plans for better performance. The book covers the use of object-relational mapper systems by explaining their pitfalls and showing you how to avoid those pitfalls. The book also covers advanced topics such as the use of functions and procedures, dynamic SQL, and generated queries. What You Will LearnIdentify optimization goals in OLTP and OLAP systemsRead and understand PostgreSQL execution plansIdentify indexes that will improve query performanceOptimize full table scansDistinguish between long queries and short queriesChoose the right optimization technique for each query typeAvoid the pitfalls of object-relational mapping systems Who This Book Is For IT professionals working in PostgreSQL who want to develop performant and scalable applications, anyone whose job title contains the words database developer or database administrator or who is a backend developer charged with programming database calls, and system architects involved in the overall design of application systems running against a PostgreSQL database Write optimized queries. This book helps you write queries that perform fast and deliver results on time. You will learn that query optimization is not a dark art practiced by a small, secretive cabal of sorcerers. Any motivated professional can learn to write efficient queries from the get-go and capably optimize existing queries. You will learn to look at the process of writing a query from the database engine\'s point of view, and know how to think like the database optimizer. The book begins with a discussion of what a performant system is and progresses to measuring performance and s