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class CreateQueriesRoles < ActiveRecord::Migration[4.2]
def self.up
create_table :queries_roles, :id => false do |t|
t.column :query_id, :integer, :null => false
t.column :role_id, :integer, :null => false
end
add_index :queries_roles, [:query_id, :role_id], :unique => true, :name => :queries_roles_ids
end
def self.down
drop_table :queries_roles
end
end
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