forgeplus/db/migrate/20200103062807_create_issue_depends.rb

class CreateIssueDepends < ActiveRecord::Migration[5.2]
  def change
    create_table :issue_depends do |t|
      t.integer :user_id
      t.integer :issue_id
      t.integer :depend_issue_id
      t.timestamps
    end

    add_index :issue_depends, [:user_id, :issue_id, :depend_issue_id]
  end
end