Téléchargez le livre : PostgreSQL Query Optimization

PostgreSQL Query Optimization

The Ultimate Guide to Building Efficient Queries

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Éditeur :

Apress


Paru le : 2021-04-22



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Description


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 setting performance goals. It introduces different classes of queries and optimization techniques suitable to each, 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 also covers advanced topics such as the use of functions and procedures, dynamic SQL, and generated queries. All of these techniques are then used together to produce performant applications, avoiding the pitfalls of object-relational mappers.



What You Will Learn

Identify optimization goals in OLTP and OLAP systemsRead and understand PostgreSQL execution plans

Distinguish between short queries and long queries
Choose the right optimization technique for each query type
Identify indexes that will improve query performance
Optimize full table scans
Avoid the pitfalls of object-relational mapping systems
Optimize the entire application rather than just database queries



Who This Book Is For


IT professionals working in PostgreSQL who want to develop performant and scalable applications, anyone whosejob 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
Pages
319 pages
Collection
n.c
Parution
2021-04-22
Marque
Apress
EAN papier
9781484268841
EAN PDF
9781484268858
Informations sur l'ebook
Nombre pages copiables
3
Nombre pages imprimables
31
Taille du fichier
10762 Ko
Ce livre est accessible aux handicaps Voir les informations sur l'accessibilité
Prix
62,11 €
EAN EPUB
9781484268858
Informations sur l'ebook
Nombre pages copiables
3
Nombre pages imprimables
31
Taille du fichier
10342 Ko
Ce livre est accessible aux handicaps Voir les informations sur l'accessibilité
Prix
62,11 €

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