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 = 'UNITED KINGDOM'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4866410.24..4866410.25 rows=1 width=26) (actual time=162122.821..162122.841 rows=100 loops=1)
   Buffers: shared hit=9932839 read=1569494 dirtied=49 written=698, temp read=161643 written=161637
   ->  Sort  (cost=4866410.24..4866410.25 rows=1 width=26) (actual time=162122.817..162122.824 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9932839 read=1569494 dirtied=49 written=698, temp read=161643 written=161637
         ->  HashAggregate  (cost=4866410.22..4866410.23 rows=1 width=26) (actual time=162117.831..162119.633 rows=3973 loops=1)
               Buffers: shared hit=9932831 read=1569494 dirtied=49 written=698, temp read=161643 written=161637
               ->  Nested Loop Anti Join  (cost=2688918.71..4866410.22 rows=1 width=26) (actual time=56746.128..161968.314 rows=39566 loops=1)
                     Buffers: shared hit=9932831 read=1569494 dirtied=49 written=698, temp read=161643 written=161637
                     ->  Nested Loop  (cost=2688918.71..4866395.00 rows=1 width=34) (actual time=56733.551..147031.941 rows=700698 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=6673915 read=1309645 dirtied=40 written=17, temp read=161643 written=161637
                           ->  Hash Semi Join  (cost=2688918.71..4866393.01 rows=1 width=38) (actual time=56733.381..129306.865 rows=1453292 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 376675
                                 Buffers: shared hit=873247 read=1289268 written=2, temp read=161643 written=161637
                                 ->  Hash Join  (cost=2441.58..1927212.87 rows=810999 width=34) (actual time=31.922..54672.469 rows=1506996 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=554376 read=527820 written=2
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1840630.19 rows=20274965 width=8) (actual time=0.025..35613.386 rows=37966096 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078937
                                             Buffers: shared hit=552511 read=527808 written=2
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=31.853..31.853 rows=3973 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 249kB
                                             Buffers: shared hit=1862 read=12
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=1.189..29.892 rows=3973 loops=1)
                                                   Buffers: shared hit=1862 read=12
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.009..0.013 rows=1 loops=1)
                                                         Filter: (n_name = 'UNITED KINGDOM'::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=1.175..28.558 rows=3973 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1861 read=12
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=0.893..0.893 rows=3973 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared hit=2 read=12
                                 ->  Hash  (cost=1688567.95..1688567.95 rows=60824895 width=8) (actual time=56681.358..56681.358 rows=60045033 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586575kB
                                       Buffers: shared hit=318871 read=761448, temp written=153905
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1688567.95 rows=60824895 width=8) (actual time=0.057..27590.161 rows=60045033 loops=1)
                                             Buffers: shared hit=318871 read=761448
                           ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.00..1.98 rows=1 width=4) (actual time=0.011..0.011 rows=0 loops=1453292)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5800668 read=20377 dirtied=40 written=15
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.58 rows=5 width=8) (actual time=0.020..0.020 rows=1 loops=700698)
                           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=3258916 read=259849 dirtied=9 written=681
 Total runtime: 162124.037 ms
(56 rows)

COMMIT;
COMMIT