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 = 'MOZAMBIQUE'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4866411.73..4866411.73 rows=1 width=26) (actual time=177919.135..177919.154 rows=100 loops=1)
   Buffers: shared hit=10156369 read=1247934 dirtied=55 written=1497, temp read=161560 written=161554
   ->  Sort  (cost=4866411.73..4866411.73 rows=1 width=26) (actual time=177919.131..177919.137 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10156369 read=1247934 dirtied=55 written=1497, temp read=161560 written=161554
         ->  HashAggregate  (cost=4866411.71..4866411.72 rows=1 width=26) (actual time=177914.072..177916.209 rows=3924 loops=1)
               Buffers: shared hit=10156361 read=1247934 dirtied=55 written=1497, temp read=161560 written=161554
               ->  Nested Loop Anti Join  (cost=2688919.64..4866411.70 rows=1 width=26) (actual time=55598.658..177747.126 rows=38595 loops=1)
                     Buffers: shared hit=10156361 read=1247934 dirtied=55 written=1497, temp read=161560 written=161554
                     ->  Nested Loop  (cost=2688919.64..4866396.49 rows=1 width=34) (actual time=55595.422..156253.614 rows=693338 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7226413 read=695370 dirtied=44 written=441, temp read=161560 written=161554
                           ->  Hash Semi Join  (cost=2688919.64..4866394.49 rows=1 width=38) (actual time=55594.289..133406.958 rows=1437842 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 373028
                                 Buffers: shared hit=1604227 read=558281 written=17, temp read=161560 written=161554
                                 ->  Hash Join  (cost=2441.58..1927213.44 rows=810999 width=34) (actual time=56.034..62160.934 rows=1491102 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=646311 read=435878 written=17
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1840630.70 rows=20274979 width=8) (actual time=0.034..41167.865 rows=37966096 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078937
                                             Buffers: shared hit=644452 read=435867 written=17
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=55.855..55.855 rows=3924 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 246kB
                                             Buffers: shared hit=1856 read=11
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=2.699..53.710 rows=3924 loops=1)
                                                   Buffers: shared hit=1856 read=11
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.009..0.016 rows=1 loops=1)
                                                         Filter: (n_name = 'MOZAMBIQUE'::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=2.682..52.233 rows=3924 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1855 read=11
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=2.282..2.282 rows=3924 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared hit=2 read=11
                                 ->  Hash  (cost=1688568.36..1688568.36 rows=60824936 width=8) (actual time=55503.057..55503.057 rows=60045033 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586575kB
                                       Buffers: shared hit=957916 read=122403, temp written=153905
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1688568.36 rows=60824936 width=8) (actual time=0.018..28435.427 rows=60045033 loops=1)
                                             Buffers: shared hit=957916 read=122403
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.98 rows=1 width=4) (actual time=0.015..0.015 rows=0 loops=1437842)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5622186 read=137089 dirtied=44 written=424
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.58 rows=5 width=8) (actual time=0.030..0.030 rows=1 loops=693338)
                           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=2929948 read=552564 dirtied=11 written=1056
 Total runtime: 177920.490 ms
(56 rows)

COMMIT;
COMMIT