Will these indexes affect my database storage?

No, hypothetical indexes created via HypoPG do not consume disk space or require maintenance, making them safe for production testing.

How do I verify if the hypothetical index is working?

The skill provides a specific EXPLAIN snippet that forces the query planner to consider hypothetical indexes, allowing you to see if the planner chooses your new index.

Do I need the HypoPG extension installed?

Yes, this skill requires your PostgreSQL database to have the 'hypopg' extension installed to function correctly.

What is a hypothetical index?

A hypothetical index is an index that doesn't exist on disk but can be used by the PostgreSQL query planner to show the potential performance impact via the EXPLAIN command.

Does this work with Ruby on Rails?

Yes, the skill is specifically designed to generate Ruby code compatible with ActiveRecord's connection handling in Rails environments.

Postgres Hypothetical Index Helper

Name: Postgres Hypothetical Index Helper
Author: tylerwillingham

bytylerwillingham

0•

Database Management

Generates Ruby and ActiveRecord commands to create and test PostgreSQL hypothetical indexes using the HypoPG extension.

This skill streamlines database performance tuning by helping developers design, implement, and verify hypothetical indexes in PostgreSQL environments. By leveraging the HypoPG extension, it generates copy-and-pasteable Ruby snippets for ActiveRecord that allow you to test index impact via EXPLAIN plans without the overhead of building physical indexes on disk. This is particularly useful for optimizing query performance in production-like environments where creating large indexes could be resource-intensive or risky.

Key Features

01SQL-safe string interpolation for HypoPG function calls

02EXPLAIN plan verification snippets for performance validation

030 GitHub stars

04Automated generation of ActiveRecord connection and lease logic

05Instructions for index cleanup and iteration

06Interactive index design guidance for tables and columns

Use Cases

01Validating complex multi-column or conditional index designs without storage overhead

02Optimizing slow database queries in Ruby on Rails applications

03Testing index strategies in staging environments before production deployment

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add tylerwillingham/dotfiles hypopg-help

For use in Claude.ai and ChatGPT

Download Skill