An ActiveRecord extension for polymorphic exclusive arc relationships

This gem automatically logs SQL EXPLAIN of every queries. You can check naturally every SQL EXPLAIN from development log, without manually executions.

Native MySQL additions to ActiveRecord, like LOAD DATA INFILE, ENABLE/DISABLE KEYS, TRUNCATE TABLE.

A safe way to accept user parameters and query against your ActiveRecord Models

In ActiveRecord, allows you to query the association of the records that your current query would return. If you need the comments of some posts: `Post.where(...).follow_assoc(:comments)`. You can then chain `where` on the comments.

Allow ActiveRecord to share a connection to multiple databases on the same host

Allows to describe field names that will be stored within hstore column together with their types. Data can then be retrieved with a set of helpful getters.

ActiveRecord extension to allow partitioning ids into regions, for merge replication purposes

Include ActiveRecord::Immutable in your ActiveRecord models to make your tables append-only.

Active Record adapter for connecting to an IBM Informix database

Pass control of Active Record methods to a dedicated object.

Attribute inheritance for AR associations

Specify columns like you would with ActiveRecord migrations and then run .auto_upgrade! Based on the mini_record gem from Davide D'Agostino, it adds fewer aliases, doesn't create timestamps and relationship columns automatically.

Fork of the ActiveRecord JDBC adapter with support for SQL Server and Azure SQL, for more information and help look at the README file in the github repository. AR-JDBC is a database adapter for Rails' ActiveRecord component designed to be used with JRuby built upon Java's JDBC API for database a...

Install this gem to use AS/400 with JRuby on Rails.

Install this gem and require 'teradata' with JRuby on Rails.

A useful ActiveRecord extension to handle columns containing large amounts of data

Adds support for lazy-loading columns in Active Record models

Something with the combination of Rails 3.1, Mysql2 0.3.x, Capybara, Selenium/Webkit/etc causes Mysql to raise exceptions where the connection is waiting on a result. This gem provides an auto-retry capability with the Mysql2Adapter to retry any query execution up to 5 times. Thi...

An ActiveRecord adapter for MySQL, based on mysql gem.