EXPLAIN select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1997-01-01' and l_shipdate < date '1997-01-01' + interval '1 year' and l_discount between 0.02 - 0.01 and 0.02 + 0.01 and l_quantity < 24;
   plan    
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  groupby 
          
 tablescan
 lineitem 
(4 rows)