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=1969179.37..1969179.37 rows=1 width=26) (actual time=47221.524..47221.542 rows=100 loops=1)
   Buffers: shared hit=13863576 read=750302 dirtied=298 written=8482
   ->  Sort  (cost=1969179.37..1969179.37 rows=1 width=26) (actual time=47221.520..47221.527 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=13863576 read=750302 dirtied=298 written=8482
         ->  HashAggregate  (cost=1969179.35..1969179.36 rows=1 width=26) (actual time=47218.315..47220.305 rows=4004 loops=1)
               Group Key: supplier.s_name
               Buffers: shared hit=13863568 read=750302 dirtied=298 written=8482
               ->  Nested Loop Anti Join  (cost=2443.74..1969179.34 rows=1 width=26) (actual time=17.203..47144.360 rows=40126 loops=1)
                     Buffers: shared hit=13863568 read=750302 dirtied=298 written=8482
                     ->  Nested Loop Semi Join  (cost=2443.17..1969178.03 rows=1 width=34) (actual time=16.555..44242.825 rows=708257 loops=1)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           Buffers: shared hit=10315933 read=748270 dirtied=298 written=8466
                           ->  Nested Loop  (cost=2442.61..1443902.35 rows=393088 width=38) (actual time=16.535..38533.849 rows=734967 loops=1)
                                 Buffers: shared hit=6765921 read=617350 dirtied=298 written=7076
                                 ->  Hash Join  (cost=2442.17..1019047.01 rows=806991 width=34) (actual time=16.398..29332.503 rows=1521117 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=739023 read=551539 dirtied=298 written=6425
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..932880.09 rows=20174773 width=8) (actual time=0.112..20435.032 rows=37965325 loops=1)
                                             Buffers: shared hit=737161 read=551526 dirtied=298 written=6425
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30) (actual time=16.195..16.195 rows=4004 loops=1)
                                             Buckets: 4096  Batches: 1  Memory Usage: 283kB
                                             Buffers: shared hit=1859 read=13
                                             ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=30) (actual time=1.281..15.147 rows=4004 loops=1)
                                                   Buffers: shared hit=1859 read=13
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.012..0.013 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=79.29..2350.29 rows=4000 width=34) (actual time=1.263..14.333 rows=4004 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Heap Blocks: exact=1858
                                                         Buffers: shared hit=1858 read=13
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=0.950..0.950 rows=4004 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=13
                                 ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.43..0.52 rows=1 width=4) (actual time=0.005..0.005 rows=0 loops=1521117)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=6026898 read=65811 written=651
                           ->  Index Scan using lineitem_l_orderkey_idx on lineitem l2  (cost=0.56..1.15 rows=15 width=8) (actual time=0.007..0.007 rows=1 loops=734967)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Filter: 0
                                 Buffers: shared hit=3550012 read=130920 written=1390
                     ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l3  (cost=0.56..0.91 rows=5 width=8) (actual time=0.004..0.004 rows=1 loops=708257)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
                           Rows Removed by Filter: 0
                           Buffers: shared hit=3547635 read=2032 written=16
 Planning time: 11.228 ms
 Execution time: 47221.933 ms
(54 rows)

COMMIT;
COMMIT