Arquivo de migração gerado pelo: rails g model NegativeExpression

negative_model_migration.rb

# Arquivo de migração gerado pelo: rails g model NegativeExpression
class CreateNegativeExpressions < ActiveRecord::Migration
  def change
    create_table :negative_expressions do |t|
      t.text :domains, array: true, null: false
      t.text :expressions, array: true, null: false

      t.timestamps null: false
    end
    
    add_index :negative_expressions, :expressions, using: 'gin'
    add_index :negative_expressions, :domains, using: 'gin'
  end
end