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', 'TRUCK')
	and l_commitdate < l_receiptdate
	and l_shipdate < l_commitdate
	and l_receiptdate >= date '1993-01-01'
	and l_receiptdate < date '1993-01-01' + interval '1 year'
group by
	l_shipmode
order by
	l_shipmode;
                                                                                                   QUERY PLAN                                                                                                    
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=20477645.90..20477645.91 rows=1 width=27)
   Sort Key: lineitem.l_shipmode
   ->  HashAggregate  (cost=20477645.88..20477645.89 rows=1 width=27)
         Group Key: lineitem.l_shipmode
         ->  Remote Subquery Scan on all (datanode_1_1,datanode_2_1,datanode_3_1,datanode_4_1,datanode_5_1,datanode_6_1,datanode_7_1,datanode_8_1)  (cost=6787517.49..20427290.40 rows=2877456 width=27)
               ->  HashAggregate  (cost=6787517.49..20427290.40 rows=1 width=27)
                     Group Key: lineitem.l_shipmode
                     ->  Hash Join  (cost=6787517.49..20427290.40 rows=2877456 width=27)
                           Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                           ->  Bitmap Heap Scan on lineitem  (cost=723.49..12157996.20 rows=2877456 width=15)
                                 Recheck Cond: ((l_commitdate < l_receiptdate) AND (l_shipdate < l_commitdate))
                                 Filter: ((l_shipmode = ANY ('{"REG AIR",TRUCK}'::bpchar[])) AND (l_receiptdate >= '1993-01-01'::date) AND (l_receiptdate < '1994-01-01 00:00:00'::timestamp without time zone))
                                 ->  Bitmap Index Scan on lineitem_l_orderkey_idx_part2  (cost=0.00..4.13 rows=66670876 width=0)
                           ->  Hash  (cost=4032887.00..4032887.00 rows=150000000 width=20)
                                 ->  Seq Scan on orders  (cost=0.00..4032887.00 rows=150000000 width=20)
(15 rows)

COMMIT;
COMMIT