With SQLreport you can manage query results and convert things.

SQLRunner allows you to load your queries out of SQL files, without using ORMs.

Debug SQL statements in ActiveRecord by displaying warnings on bad queries.

A gem that allows for simple SQL-based search and sort functionality

Sequence number generation in Rails

The author was too lazy to write a description

Retrieve SQL values using Active Record query interface but without instantiation of AR-objects

Squeel unlocks the power of ARel in your Rails 3 application with a handy block-based syntax. You can write subqueries, access named functions provided by your RDBMS, and more, all without writing SQL strings. I'm trying to push a version of this gem, so that bundl...

"Squirm facilitates using Postgres stored procedures with Active Record."

Write-through and Read-through Cacheing for ActiveRecord

Provide simple helpers on persist values in redis for performance. Works with ActiveRecord.

Stackflame provides a simple API to deal with Flamegraph of stackprof.

Stackify APM for Ruby

Fancy redis-backed caches

This gem is a thin wrapper of stackprof and provides simple API to see profiling result quickly.

A transactional outbox implementation for Ruby/ActiveRecord

ActiveRecordを単体で動かす時に使う起動処理

StarKit Banking Interface

A tiny library for making ActiveRecord models into state machines

Easily add state to Poro and ActiveRecord objects.