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PostgreSQL 10 High Performance

You're reading from   PostgreSQL 10 High Performance Expert techniques for query optimization, high availability, and efficient database maintenance

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Product type Paperback
Published in Apr 2018
Publisher Packt
ISBN-13 9781788474481
Length 508 pages
Edition 3rd Edition
Languages
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Author (1):
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Enrico Pirozzi Enrico Pirozzi
Author Profile Icon Enrico Pirozzi
Enrico Pirozzi
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Table of Contents (18) Chapters Close

Preface 1. PostgreSQL Versions FREE CHAPTER 2. Database Hardware 3. Database Hardware Benchmarking 4. Disk Setup 5. Memory for Database Caching 6. Server Configuration Tuning 7. Routine Maintenance 8. Database Benchmarking 9. Database Indexing 10. Query Optimization 11. Database Activity and Statistics 12. Monitoring and Trending 13. Pooling and Caching 14. Scaling with Replication 15. Partitioning Data 16. Avoiding Common Problems 17. Other Books You May Enjoy

PostgreSQL 10 – declarative partitioning – the built-in partitioning

Starting from PostgreSQL 10, PostgreSQL introduced the declarative partitioning syntax. With this syntax the necessity to define additional triggers or rules disappear, but functionality and performances remain unchanged.

It's possible to use declarative partitioning for list partitioning and/or for range partitioning; first of all, we have to define a master table containing the partition method (list or RANGE). For example, if we want to partition by a list method:

create table orders_state  
   (orderid integer not null,   
   orderdate date not null, 
   customerid integer not null, 
   tax numeric(12,2) not null , 
   state char(2))  
partition by list (state);  

Next, we have to create the child table, for example, for all US orders:

CREATE TABLE ORDERS_US PARTITION OF ORDERS_state FOR...
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