BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	s_name,
	s_address
from
	supplier,
	nation
where
	s_suppkey in (
		select
			distinct (ps_suppkey)
		from
			partsupp,
			part
		where
			ps_partkey=p_partkey
			and p_name like 'burlywood%'
			and ps_availqty > (
				select
					0.5 * sum(l_quantity)
				from
					lineitem
				where
					l_partkey = ps_partkey
					and l_suppkey = ps_suppkey
					and l_shipdate >= '1997-01-01'
					and l_shipdate < cast(date '1997-01-01' + interval '1 year' as date)
			)
	)
	and s_nationkey = n_nationkey
	and n_name = 'GERMANY'
order by
	s_name;
                                                                                                  QUERY PLAN                                                                                                   
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=12740756.53..12740759.47 rows=1175 width=51) (actual time=23756.072..23756.183 rows=1803 loops=1)
   Sort Key: supplier.s_name
   Sort Method: quicksort  Memory: 254kB
   Buffers: shared hit=2726657 read=391028 dirtied=2272 written=20780
   ->  Nested Loop  (cost=12736286.90..12740696.61 rows=1175 width=51) (actual time=23615.763..23745.955 rows=1803 loops=1)
         Join Filter: (supplier.s_nationkey = nation.n_nationkey)
         Rows Removed by Join Filter: 42884
         Buffers: shared hit=2726652 read=391028 dirtied=2272 written=20780
         ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.015..0.028 rows=1 loops=1)
               Filter: (n_name = 'GERMANY'::bpchar)
               Rows Removed by Filter: 24
               Buffers: shared hit=1
         ->  Hash Semi Join  (cost=12736286.90..12740328.26 rows=29363 width=55) (actual time=23615.558..23740.460 rows=44687 loops=1)
               Hash Cond: (supplier.s_suppkey = partsupp.ps_suppkey)
               Buffers: shared hit=2726651 read=391028 dirtied=2272 written=20780
               ->  Seq Scan on supplier  (cost=0.00..3179.00 rows=100000 width=59) (actual time=0.029..35.371 rows=100000 loops=1)
                     Buffers: shared hit=2179
               ->  Hash  (cost=12735919.86..12735919.86 rows=29363 width=4) (actual time=23615.467..23615.467 rows=44687 loops=1)
                     Buckets: 4096  Batches: 1  Memory Usage: 1572kB
                     Buffers: shared hit=2724472 read=391028 dirtied=2272 written=20780
                     ->  HashAggregate  (cost=12735332.60..12735626.23 rows=29363 width=4) (actual time=23569.118..23596.616 rows=44687 loops=1)
                           Buffers: shared hit=2724472 read=391028 dirtied=2272 written=20780
                           ->  Nested Loop  (cost=0.00..12735259.19 rows=29363 width=4) (actual time=1.884..23427.620 rows=59102 loops=1)
                                 Buffers: shared hit=2724472 read=391028 dirtied=2272 written=20780
                                 ->  Seq Scan on part  (cost=0.00..65522.00 rows=22022 width=4) (actual time=0.024..2212.505 rows=21743 loops=1)
                                       Filter: ((p_name)::text ~~ 'burlywood%'::text)
                                       Rows Removed by Filter: 1978257
                                       Buffers: shared hit=12794 read=27728 written=825
                                 ->  Index Scan using pk_partsupp on partsupp  (cost=0.00..575.31 rows=1 width=8) (actual time=0.724..0.972 rows=3 loops=21743)
                                       Index Cond: (ps_partkey = part.p_partkey)
                                       Filter: ((ps_availqty)::double precision > (SubPlan 1))
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=2711678 read=363300 dirtied=2272 written=19955
                                       SubPlan 1
                                         ->  Aggregate  (cost=140.92..140.94 rows=1 width=4) (actual time=0.228..0.228 rows=1 loops=86972)
                                               Buffers: shared hit=2643772 read=341447 dirtied=2272 written=19064
                                               ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=0.00..140.92 rows=1 width=4) (actual time=0.142..0.225 rows=1 loops=86972)
                                                     Index Cond: (l_partkey = partsupp.ps_partkey)
                                                     Filter: ((l_shipdate >= '1997-01-01'::date) AND (l_shipdate < '1998-01-01'::date) AND (l_suppkey = partsupp.ps_suppkey))
                                                     Rows Removed by Filter: 29
                                                     Buffers: shared hit=2643772 read=341447 dirtied=2272 written=19064
 Total runtime: 23758.223 ms
(42 rows)

COMMIT;
COMMIT