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 STATES'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4804080.98..4804080.99 rows=1 width=26) (actual time=174317.299..174317.326 rows=100 loops=1)
   Buffers: shared hit=10643135 read=916672 dirtied=4 written=5173, temp read=161547 written=161541
   ->  Sort  (cost=4804080.98..4804080.99 rows=1 width=26) (actual time=174317.294..174317.305 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10643135 read=916672 dirtied=4 written=5173, temp read=161547 written=161541
         ->  HashAggregate  (cost=4804080.96..4804080.97 rows=1 width=26) (actual time=174310.213..174312.766 rows=4004 loops=1)
               Buffers: shared hit=10643127 read=916672 dirtied=4 written=5173, temp read=161547 written=161541
               ->  Nested Loop Anti Join  (cost=2654492.88..4804080.96 rows=1 width=26) (actual time=57047.396..174158.479 rows=40057 loops=1)
                     Buffers: shared hit=10643127 read=916672 dirtied=4 written=5173, temp read=161547 written=161541
                     ->  Nested Loop  (cost=2654492.88..4804066.06 rows=1 width=34) (actual time=57045.251..153554.000 rows=707650 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7475243 read=530142 dirtied=4 written=595, temp read=161547 written=161541
                           ->  Hash Semi Join  (cost=2654492.88..4804064.10 rows=1 width=38) (actual time=57044.826..132941.119 rows=1465637 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 380481
                                 Buffers: shared hit=1697873 read=436953 written=5, temp read=161547 written=161541
                                 ->  Hash Join  (cost=2441.58..1902547.99 rows=800606 width=34) (actual time=20.450..42512.479 rows=1519759 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=767352 read=300999
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1817043.50 rows=20015160 width=8) (actual time=0.071..29292.340 rows=37928797 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22056532
                                             Buffers: shared hit=765488 read=300987
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=20.279..20.279 rows=4004 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 251kB
                                             Buffers: shared hit=1861 read=12
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=1.672..18.477 rows=4004 loops=1)
                                                   Buffers: shared hit=1861 read=12
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.012..0.014 rows=1 loops=1)
                                                         Filter: (n_name = 'UNITED STATES'::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=1.650..17.339 rows=4004 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1860 read=12
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.323..1.323 rows=4004 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared hit=2 read=12
                                 ->  Hash  (cost=1666929.80..1666929.80 rows=60045480 width=8) (actual time=56988.914..56988.914 rows=59985329 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586039kB
                                       Buffers: shared hit=930521 read=135954 written=5, temp written=153747
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1666929.80 rows=60045480 width=8) (actual time=0.020..26623.189 rows=59985329 loops=1)
                                             Buffers: shared hit=930521 read=135954 written=5
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.94 rows=1 width=4) (actual time=0.013..0.013 rows=0 loops=1465637)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5777370 read=93189 dirtied=4 written=590
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.42 rows=5 width=8) (actual time=0.028..0.028 rows=1 loops=707650)
                           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=3167884 read=386530 written=4578
 Total runtime: 174318.936 ms
(56 rows)

COMMIT;
COMMIT