BEGIN;
BEGIN
EXPLAIN
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 ('REG AIR', 'SHIP')
	and l_commitdate < l_receiptdate
	and l_shipdate < l_commitdate
	and l_receiptdate >= date '1996-01-01'
	and l_receiptdate < date '1996-01-01' + interval '1 year'
group by
	l_shipmode
order by
	l_shipmode;
                                                                                                                                    QUERY PLAN                                                                                                                                     
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Finalize GroupAggregate  (cost=2217343.81..2219792.59 rows=7 width=27)
   Group Key: lineitem.l_shipmode
   ->  Gather Merge  (cost=2217343.81..2219792.42 rows=14 width=27)
         Workers Planned: 2
         ->  Partial GroupAggregate  (cost=2216343.79..2218790.78 rows=7 width=27)
               Group Key: lineitem.l_shipmode
               ->  Sort  (cost=2216343.79..2216649.65 rows=122346 width=27)
                     Sort Key: lineitem.l_shipmode
                     ->  Parallel Hash Join  (cost=445729.68..2203075.68 rows=122346 width=27)
                           Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                           ->  Parallel Seq Scan on lineitem  (cost=0.00..1718935.84 rows=122346 width=19)
                                 Filter: ((l_shipmode = ANY ('{"REG AIR",SHIP}'::bpchar[])) AND (l_commitdate < l_receiptdate) AND (l_shipdate < l_commitdate) AND (l_receiptdate >= '1996-01-01'::date) AND (l_receiptdate < '1997-01-01 00:00:00'::timestamp without time zone))
                           ->  Parallel Hash  (cost=330879.30..330879.30 rows=6255630 width=24)
                                 ->  Parallel Seq Scan on orders  (cost=0.00..330879.30 rows=6255630 width=24)
(14 rows)

COMMIT;
COMMIT