Add_index Activerecord Migration

To help with this, Neo4j.rb provides an ActiveRecord -like migration framework and a set of helper methods to manipulate both database schema and data.

Aug 27, 2017. Source – https://github.com/driftingruby/095-active-record-migrations. end # end # def up # add_index :users, :first_name # add_index :users,

Apr 17, 2014. reinteractive: Reversible migrations with Active Record. For example, add_column , add_index , create_table , and so on can all be easily.

Newest ‘ruby-on-rails’ Questions – Stack Overflow – Stack Overflow | The World’s Largest Online Community for Developers

Jul 17, 2014. class CreateUniqueIndexForPayments < ActiveRecord::Migration def change add_index :payments, [:order_id, :amount, :payment_date,

Netezza Migration To Teradata Identifying Database Migration Dependencies Introducing Java DB Migrations – Carbon Five blog – Feb 6, 2008. UPDATE: A new version of the Java DB Migrations framework has been release, Determine the latest database schema version available. In this example we' re specifying the dependency on our JDBC driver so that the. Core Settings ¶ Here’s

Ruby on Rails Tutorial (Rails 5) Learn Web Development with Rails Michael Hartl. Newly updated for Rails 5, the Ruby on Rails Tutorial book and screencast series.

Ruby on Rails Tutorial (Rails 5) Learn Web Development with Rails Michael Hartl. Newly updated for Rails 5, the Ruby on Rails Tutorial book and screencast series.

Rails 5 adds Expression Indexes and Operator Classes support for. – Jul 20, 2016. Active Record index creation api support adding expression indexes. expression index is not straightforward since the migrate api does not support it. Rails 5 provides ability to add an expression index using add_index.