File: 20131218183023_delete_orphan_time_entries_custom_values.rb

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class DeleteOrphanTimeEntriesCustomValues < ActiveRecord::Migration[4.2]
  def up
    CustomValue.where("customized_type = ? AND NOT EXISTS (SELECT 1 FROM #{TimeEntry.table_name} t WHERE t.id = customized_id)", "TimeEntry").delete_all
  end

  def down
    # nop
  end
end