text: select d_year,c_nation, COUNT(*) as profit
  from lineorder,supplier,customer,part,ddate
  where lo_custkey = c_custkey
  and lo_suppkey = s_suppkey
  and lo_partkey = p_partkey
  and lo_orderdate = d_datekey
  and c_region = 1
  and s_region = 1
  and (p_mfgr = 0 or p_mfgr = 1)
  group by d_year,c_nation;
  