query R select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1994-01-01' and l_shipdate < date '1994-01-01' + interval '1' year and l_discount between 0.08 - 0.01 and 0.08 + 0.01 and l_quantity < 24; ---- 90927.6243