PostgreSQL weekly news - July 20, 2022

PostgreSQL 14 Internals: The Book
This book is for those “ When using a database, you won't be satisfied with the black box method ” Written by people , The author is our favorite in-depth study Postgres The technical author of the feature . The first part now begins with 160 Many pages of PDF Format provided .

Egor Rogov

\gexec stay psql：Postgres Advanced user practices ？

If you use eval too Python or JavaScript Other languages ,\gexec Provide a similar mechanism psql And open up some interesting ways to dynamically generate and run collective queries .（ If you like history , Here is pgsql-hackers Some background of this function in the original announcement in the list .）

Julian Markwort

2022 year PostgreSQL Preliminary opinions of the status report

PostgreSQL The status survey has recently ended . While we continue to deepen our research results , Please read the first insight in our new blog post , And share your email , In order to be notified when the complete report is released

Timescale

stay Postgres 15 Use in DISTINCT

Use DISTINCTwithSELECT Eliminate from the result by specifying an expression “ repeat ” That's ok . We are still in the middle of nowhere Postgres 15 Of beta Stage , But this article shows how SELECT DISTINCT Improve performance through parallelization .

Robert Bernier

BRIN When will the index win ？

BRIN and BTree Easy to understand comparison of indexes , And explained that although BRIN Relatively simple （ for example , Very large insert table only ）, But when and why BRIN Most meaningful .

Paul Ramsey

Postgres How views and materialized views work

also , The important thing is to pay attention ,“ How they affect TimescaleDB Continuous polymerization .” Whether you use Timescale, These are useful introductions to views , These views elegantly explain why Timescale Additional mechanisms must be created for time series use cases .

David Kohn (Timescale)

Use PostgreSQL Speed up the construction of internal tools 10 times

l,null,”en

Retool

Postgres vs SQLite with Litestream

As much as I like Postgres, but SQLite It is absolutely perfect for many use cases .Litestream It's a tool , It allows you to SQLite Change streaming to another location , So as to open up more opportunities . Its creator Ben Johnson We talked about it in this program , And integrate the overall approach with Postgres Made a comparison .

Ship It Podcast podcast

Tips for this week

The coming Postgres Activities

Written on July 20, 2022

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