12.sql

select l_shipmode, sum(case when o_orderpriority = '1-URGENT' or o_orderpriority = '2-HIGH' then 1 else 0 end) as high_line_count, sum(case when o_orderpriority <> '1-URGENT' and o_orderpriority <> '2-HIGH' then 1 else 0 end) as low_line_count from ORDERS, LINEITEM where o_orderkey = l_orderkey and l_shipmode in ('RAIL', 'FOB') and l_commitdate < l_receiptdate and l_shipdate < l_commitdate and l_receiptdate >= date '1997-01-01' and l_receiptdate < date '1997-01-01' + interval '1' year group by l_shipmode order by l_shipmode;