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=4842328.59..4842328.59 rows=1 width=26) (actual time=366256.640..366256.660 rows=100 loops=1)
   Buffers: shared hit=9749793 read=1642415 dirtied=166 written=13475, temp read=161554 written=161548
   ->  Sort  (cost=4842328.59..4842328.59 rows=1 width=26) (actual time=366256.637..366256.643 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9749793 read=1642415 dirtied=166 written=13475, temp read=161554 written=161548
         ->  HashAggregate  (cost=4842328.57..4842328.58 rows=1 width=26) (actual time=366251.779..366253.586 rows=3924 loops=1)
               Buffers: shared hit=9749785 read=1642415 dirtied=166 written=13475, temp read=161554 written=161548
               ->  Nested Loop Anti Join  (cost=2675618.61..4842328.56 rows=1 width=26) (actual time=105233.636..366022.812 rows=38591 loops=1)
                     Buffers: shared hit=9749785 read=1642415 dirtied=166 written=13475, temp read=161554 written=161548
                     ->  Nested Loop  (cost=2675618.61..4842313.47 rows=1 width=34) (actual time=105230.398..275485.598 rows=693330 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7000035 read=910826 dirtied=9 written=137, temp read=161554 written=161548
                           ->  Hash Semi Join  (cost=2675618.61..4842311.49 rows=1 width=38) (actual time=105230.342..211791.797 rows=1437768 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 372977
                                 Buffers: shared hit=1251881 read=899941, temp read=161554 written=161548
                                 ->  Hash Join  (cost=2441.58..1917684.92 rows=806844 width=34) (actual time=80.117..92329.840 rows=1491037 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=823451 read=253395
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1831520.46 rows=20174519 width=8) (actual time=0.052..65616.998 rows=37965325 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078757
                                             Buffers: shared hit=821592 read=253384
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=79.958..79.958 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=2.248..77.084 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=0.010..0.019 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=2.230..75.159 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=1.897..1.897 rows=3924 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared hit=2 read=11
                                 ->  Hash  (cost=1680211.57..1680211.57 rows=60523557 width=8) (actual time=105128.219..105128.219 rows=60044082 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586580kB
                                       Buffers: shared hit=428430 read=646546, temp written=153901
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1680211.57 rows=60523557 width=8) (actual time=0.016..78186.942 rows=60044082 loops=1)
                                             Buffers: shared hit=428430 read=646546
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.97 rows=1 width=4) (actual time=0.042..0.043 rows=0 loops=1437768)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5748154 read=10885 dirtied=9 written=137
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.52 rows=5 width=8) (actual time=0.129..0.129 rows=1 loops=693330)
                           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=2749750 read=731589 dirtied=157 written=13338
 Total runtime: 366257.909 ms
(56 rows)

COMMIT;
COMMIT