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What's new in the Postgres 16 query planner / optimizer

Postgres 16 introduces quite a few improvements to the query planner and makes many SQL queries run faster than they did on previous versions of PostgreSQL. This post is a deep dive into 10 of the improvements, including code blocks and comparisons of query plan output between Postgres 15 & Postgres 16. ....

David Rowley , Nested Loop ,

Nova Mode: The Ultimate ChatGPT Custom Instruction

I have developed a way to supercharge ChatGPT. It's called Nova Mode 1.0, and it's an awesome custom instruction that you can paste into your ChatGPT Custom instructions (see screenshot below) in ChatGPT Settings.This modifies how ChatGPT works in all your chats, giving you much more control over how you interact with ChatGPT. It is ....

Nova Mode , Custom Instructions , Meta Mode , Nested Loop , Draft Function , Web Tech ,

An automatic indexing system for Postgres: How we built the pganalyze Indexing Engine

The pganalyze Indexing Engine simulates hundreds of possible combinations to recommend missing Postgres indexes using its 'What if?' analysis. ....

United States , Jan Kossmann , Rainer Schlosser , Julien Rouhaud , Stefan Halfpap , Marcel Jankrift , Hasso Plattner Institute , Indexing Engine , Markus Winand , Write Overhead , Sequential Scan , Index Scan , Merge Join , Nested Loop , Index Write Overhead , Index Selection , Set Covering Algorithm , Index Advisor , Webinar Re Run ,

Operating an Entire Company on a Minimal Two-Core PostgreSQL Instance: Query Optimization Insights, Part 1

In an era where the costs for cloud services continue to soar, I want to outline how our data team has successfully managed to run the infrastructure of our energy trading company within the first year using only two PostgreSQL database instances - each equipped with just two CPU cores and four GB of RAM. Despite this minimal use of resources, internal business processes and analytics dashboards . ....

Sentire Company , Minimal Two Core , Query Optimization Insights , Inefficient Queries , Database Server , Statistics Used , Join Strategies , Nested Loop , Hash Join , Merge Join , Missing Indexes , Full Table Scans , Index Only Scans , Aggregation Operations , Materialized Views ,