Tie query parameters to scopes, or create dynamic scopes on the fly. Define sets of reusable scopes for use in reporting and filtering.

Queryalize lets you use Rails 3 to build queries just like with ActiveRecord::QueryMethods, except you can serialize the end result. This is useful for running queries that potentially return large result sets in the background using something like Resque or Delayed::Job.

Query cache middleware for custom ActiveRecord base classes.

Detecting query result changes

This gem provides DSL to write custom complex filters for ActiveRecord models

This gem provides additional functionality on your query objects. It will filter and paginate your query by supplying an option

If max_query_limit is not specified, this gem will return only 5 result items by default on all sql queries

Query methods extend in rails 4: Asscociation has_many, union, or, like, operators...

This gem provides tools to analyze your queries based on custom rules and detect bad queries.

This gem provides tools to analyze your queries based on custom rules.

This library helps to find where in your rails app sql query was run.

(DEPRECATED use active-record-query-count instead) Display an overview of quantity of queries and their origin in Rails applications.

Adds batch functionality to the queue_classic gem

RSpec Matchers and helpers for QueueClassicPlus

Call any ActiveRecord instance method as though it was a Resque job

Visibility into scheduled Que tasks

Qui, or Queuemetrics User Integration, is a gem that creates an ActiveRecord wrapper for manipulating users, agents, and queues within the Queuemetrics calling platform.

Provide a simple way of cloning ActiveRecord Records

Quickening is a Rails gem for adding to your model a facility to query and manage duplicate records. It's been written to remain relatively abstract and adaptable to various models, and so the library should be an easy plugin for models you may have set up already (barring name clashes). ...

Implements Law of Demeter by mapping associated record attributes as own attributes (one-way read-only). Consequently, speeds up SQL queries by removing joins queries between intermediary models, at the cost of slower writes. This is an anti-normalization pattern in favour of actual data-redundan...