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=4851961.56..4851961.56 rows=1 width=26) (actual time=133069.873..133069.893 rows=100 loops=1)
   Buffers: shared hit=10104925 read=1293582 dirtied=152 written=17534, temp read=161561 written=161555
   ->  Sort  (cost=4851961.56..4851961.56 rows=1 width=26) (actual time=133069.869..133069.876 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10104925 read=1293582 dirtied=152 written=17534, temp read=161561 written=161555
         ->  HashAggregate  (cost=4851961.54..4851961.55 rows=1 width=26) (actual time=133064.840..133066.845 rows=3924 loops=1)
               Buffers: shared hit=10104917 read=1293582 dirtied=152 written=17534, temp read=161561 written=161555
               ->  Nested Loop Anti Join  (cost=2680954.36..4851961.53 rows=1 width=26) (actual time=45390.065..132849.541 rows=38588 loops=1)
                     Buffers: shared hit=10104917 read=1293582 dirtied=152 written=17534, temp read=161561 written=161555
                     ->  Nested Loop  (cost=2680954.36..4851946.39 rows=1 width=34) (actual time=45387.441..116911.784 rows=693373 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7074432 read=841386 dirtied=3 written=55, temp read=161561 written=161555
                           ->  Hash Semi Join  (cost=2680954.36..4851944.40 rows=1 width=38) (actual time=45387.374..100980.589 rows=1437940 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 373021
                                 Buffers: shared hit=1328928 read=827182 written=6, temp read=161561 written=161555
                                 ->  Hash Join  (cost=2441.58..1921497.99 rows=807543 width=34) (actual time=32.939..42231.362 rows=1491220 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=358877 read=720113 written=6
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1835175.44 rows=20214812 width=8) (actual time=0.034..28610.817 rows=37965800 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22079072
                                             Buffers: shared hit=357018 read=720102 written=6
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=32.827..32.827 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=1.697..30.883 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..0.015 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=1.681..29.427 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=1.312..1.312 rows=3924 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared hit=2 read=11
                                 ->  Hash  (cost=1683564.35..1683564.35 rows=60644435 width=8) (actual time=45321.594..45321.594 rows=60044872 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586575kB
                                       Buffers: shared hit=970051 read=107069, temp written=153905
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1683564.35 rows=60644435 width=8) (actual time=0.016..23448.799 rows=60044872 loops=1)
                                             Buffers: shared hit=970051 read=107069
                           ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.00..1.97 rows=1 width=4) (actual time=0.010..0.010 rows=0 loops=1437940)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5745504 read=14204 dirtied=3 written=49
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.55 rows=5 width=8) (actual time=0.022..0.022 rows=1 loops=693373)
                           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=3030485 read=452196 dirtied=149 written=17479
 Total runtime: 133071.373 ms
(56 rows)

COMMIT;
COMMIT