## RANKS BY ARTIST
    - join: artist_rank_bi_accounting_by_revenue_2015
      foreign_key: artist_id
      relationship: many_to_one
    - join: artist_rank_bi_accounting_by_revenue_2014
      foreign_key: artist_id
      relationship: many_to_one
    - join: artist_rank_bi_accounting_by_revenue_2013
      foreign_key: artist_id
      relationship: many_to_one
    - join: artist_rank_bi_accounting_by_revenue_2012
      foreign_key: artist_id
      relationship: many_to_one
    - join: artist_rank_bi_accounting_by_revenue_selected_months
      foreign_key: artist_id
      relationship: many_to_one