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=4808928.94..4808928.95 rows=1 width=26) (actual time=166360.760..166360.790 rows=100 loops=1)
   Buffers: shared hit=9662422 read=1715601 dirtied=147 written=10202, temp read=161557 written=161551
   ->  Sort  (cost=4808928.94..4808928.95 rows=1 width=26) (actual time=166360.755..166360.769 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9662422 read=1715601 dirtied=147 written=10202, temp read=161557 written=161551
         ->  HashAggregate  (cost=4808928.92..4808928.93 rows=1 width=26) (actual time=166352.759..166355.501 rows=3924 loops=1)
               Buffers: shared hit=9662414 read=1715601 dirtied=147 written=10202, temp read=161557 written=161551
               ->  Nested Loop Anti Join  (cost=2657170.73..4808928.92 rows=1 width=26) (actual time=57425.516..166180.754 rows=38574 loops=1)
                     Buffers: shared hit=9662414 read=1715601 dirtied=147 written=10202, temp read=161557 written=161551
                     ->  Nested Loop  (cost=2657170.73..4808913.99 rows=1 width=34) (actual time=57416.408..144439.042 rows=693466 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=6745753 read=1150247 dirtied=147 written=2073, temp read=161557 written=161551
                           ->  Hash Semi Join  (cost=2657170.73..4808912.04 rows=1 width=38) (actual time=57416.326..122541.781 rows=1437756 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 372930
                                 Buffers: shared hit=1149709 read=987253 written=1, temp read=161557 written=161551
                                 ->  Hash Join  (cost=2441.58..1904463.63 rows=801418 width=34) (actual time=38.857..51011.103 rows=1491018 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=539814 read=529602
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1818874.98 rows=20035439 width=8) (actual time=0.048..34161.104 rows=37966905 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078698
                                             Buffers: shared hit=538949 read=528597
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=38.741..38.741 rows=3924 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 246kB
                                             Buffers: shared hit=862 read=1005
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=1.727..36.493 rows=3924 loops=1)
                                                   Buffers: shared hit=862 read=1005
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.011..0.017 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=1.709..34.970 rows=3924 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=861 read=1005
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.329..1.329 rows=3924 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=13
                                 ->  Hash  (cost=1668609.18..1668609.18 rows=60106318 width=8) (actual time=57343.963..57343.963 rows=60045603 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586633kB
                                       Buffers: shared hit=609895 read=457651 written=1, temp written=153903
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1668609.18 rows=60106318 width=8) (actual time=0.036..29518.203 rows=60045603 loops=1)
                                             Buffers: shared hit=609895 read=457651 written=1
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.94 rows=1 width=4) (actual time=0.014..0.014 rows=0 loops=1437756)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5596044 read=162994 dirtied=147 written=2072
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.44 rows=5 width=8) (actual time=0.030..0.030 rows=1 loops=693466)
                           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=2916661 read=565354 written=8129
 Total runtime: 166362.650 ms
(56 rows)

COMMIT;
COMMIT