*************************** 1. row ***************************
           id: 1
  select_type: SIMPLE
        table: br
         type: index
possible_keys: location_city_fk_idx,location_bank_fk_idx
          key: branch_deposit
      key_len: 9
          ref: NULL
         rows: 148
        Extra: Using where
*************************** 2. row ***************************
           id: 1
  select_type: SIMPLE
        table: c
         type: eq_ref
possible_keys: PRIMARY,city_state_fk
          key: PRIMARY
      key_len: 8
          ref: banks.br.city_id
         rows: 1
        Extra:
*************************** 3. row ***************************
           id: 1
  select_type: SIMPLE
        table: s
         type: eq_ref
possible_keys: PRIMARY
          key: PRIMARY
      key_len: 4
          ref: banks.c.state_id
         rows: 1
        Extra: