Easy and performant aggregation for rails

Wrapping the no-sql data sources in Rails-like models and relations

Compatible with mysql, sqlite, and postgres

Monkey patch for fix Arel column_cache. (use AR model columns_hash)

SQL date functions for AREL 2 + AR 3 scopes (such as created_at_year_eq)

Extension of Arel Gem.

A serialization specification of ARel, with some utilities.

Provides haversine formula, implemented with Arel; which could be added to ActiveRecord scope, for instance.

Adds is_blank to arel attribute.

Arel extension for PostgreSQL ltree type

Add index hint to MySQL query in Arel.

Adds several methods which help to build ORDER BY statements.

Arel nodes and vistor methods for Postgres Json datatype

Parses and Build Arel where clause search conditions from input string

Adds to_sql to arel table and attribute.

Provides trigonometry functions, implemented with Arel; which could be added to ActiveRecord scope, for instance.

Adds support for limit and offset for Sybase ASE DB to activerecord-jdbc-adapter for Rails 3

Adds support for limit and offset for Sybase ASE DB to activerecord-jdbc-adapter for Rails 3

CartoDB sync for ActiveRecord objects

If you're using Oracle or another DBMS that has case-insensitive collation sequences, and you don't want to litter your database access code with case conversions, this gem is for you.