BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	s_name,
	count(*) as numwait
from
	supplier,
	lineitem l1,
	orders,
	nation
where
	s_suppkey = l1.l_suppkey
	and o_orderkey = l1.l_orderkey
	and o_orderstatus = 'F'
	and l1.l_receiptdate > l1.l_commitdate
	and exists (
		select
			*
		from
			lineitem l2
		where
			l2.l_orderkey = l1.l_orderkey
			and l2.l_suppkey <> l1.l_suppkey
	)
	and not exists (
		select
			*
		from
			lineitem l3
		where
			l3.l_orderkey = l1.l_orderkey
			and l3.l_suppkey <> l1.l_suppkey
			and l3.l_receiptdate > l3.l_commitdate
	)
	and s_nationkey = n_nationkey
	and n_name = 'EGYPT'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4856789.56..4856789.56 rows=1 width=26) (actual time=389308.125..389308.144 rows=100 loops=1)
   Buffers: shared hit=9969189 read=1560722 written=3186, temp read=161663 written=161657
   ->  Sort  (cost=4856789.56..4856789.56 rows=1 width=26) (actual time=389308.121..389308.128 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9969189 read=1560722 written=3186, temp read=161663 written=161657
         ->  HashAggregate  (cost=4856789.54..4856789.55 rows=1 width=26) (actual time=389302.844..389304.900 rows=3981 loops=1)
               Buffers: shared hit=9969181 read=1560722 written=3186, temp read=161663 written=161657
               ->  Nested Loop Anti Join  (cost=2683605.58..4856789.53 rows=1 width=26) (actual time=88493.638..389009.141 rows=39458 loops=1)
                     Buffers: shared hit=9969181 read=1560722 written=3186, temp read=161663 written=161657
                     ->  Nested Loop  (cost=2683605.58..4856774.37 rows=1 width=34) (actual time=88484.378..295278.933 rows=703554 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=6978311 read=1019011 written=1450, temp read=161663 written=161657
                           ->  Hash Semi Join  (cost=2683605.58..4856772.38 rows=1 width=38) (actual time=88484.301..218179.049 rows=1457791 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 378445
                                 Buffers: shared hit=1181169 read=977083 written=1422, temp read=161663 written=161657
                                 ->  Hash Join  (cost=2441.58..1923407.62 rows=809254 width=34) (actual time=87.202..113861.033 rows=1512401 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=448006 read=632058 written=25
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1836993.00 rows=20234800 width=8) (actual time=0.046..84297.545 rows=37966174 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078820
                                             Buffers: shared hit=446144 read=632044 written=25
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=86.995..86.995 rows=3981 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 249kB
                                             Buffers: shared hit=1859 read=14
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=2.010..84.256 rows=3981 loops=1)
                                                   Buffers: shared hit=1859 read=14
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.007..0.016 rows=1 loops=1)
                                                         Filter: (n_name = 'EGYPT'::bpchar)
                                                         Rows Removed by Filter: 24
                                                         Buffers: shared hit=1
                                                   ->  Bitmap Heap Scan on supplier  (cost=79.26..2350.26 rows=4000 width=34) (actual time=1.994..82.611 rows=3981 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1858 read=14
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.592..1.592 rows=3981 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1685232.00..1685232.00 rows=60704400 width=8) (actual time=88368.227..88368.227 rows=60044994 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586568kB
                                       Buffers: shared hit=733163 read=345025 written=1397, temp written=153905
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1685232.00 rows=60704400 width=8) (actual time=0.037..62880.534 rows=60044994 loops=1)
                                             Buffers: shared hit=733163 read=345025 written=1397
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.98 rows=1 width=4) (actual time=0.051..0.051 rows=0 loops=1457791)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5797142 read=41928 written=28
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.56 rows=5 width=8) (actual time=0.132..0.132 rows=1 loops=703554)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: ((l_receiptdate > l_commitdate) AND (l_suppkey <> l1.l_suppkey))
                           Rows Removed by Filter: 1
                           Buffers: shared hit=2990870 read=541711 written=1736
 Total runtime: 389309.591 ms
(56 rows)

COMMIT;
COMMIT