class CreateSubjectUserInfos < ActiveRecord::Migration[5.2]
  def change
    create_table :subject_user_infos do |t|
      t.references :user
      t.references :subject
      t.string :username
      t.integer :passed_myshixun_count, default: 0
      t.integer :passed_games_count, default: 0
      t.integer :code_line_count, default: 0
      t.integer :evaluate_count, default: 0
      t.integer :cost_time, default: 0
      t.timestamps
    end

    add_index :subject_user_infos, [:user_id, :subject_id], unique: true

  end
end