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 = 'RUSSIA'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                                 QUERY PLAN                                                                                                 
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=1955674.00..1955674.01 rows=1 width=26) (actual time=45002.486..45002.505 rows=100 loops=1)
   Buffers: shared hit=13837887 read=791652 written=7111
   ->  Sort  (cost=1955674.00..1955674.01 rows=1 width=26) (actual time=45002.484..45002.491 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=13837887 read=791652 written=7111
         ->  HashAggregate  (cost=1955673.98..1955673.99 rows=1 width=26) (actual time=44998.965..45001.219 rows=4021 loops=1)
               Group Key: supplier.s_name
               Buffers: shared hit=13837879 read=791652 written=7111
               ->  Nested Loop Anti Join  (cost=2443.74..1955673.98 rows=1 width=26) (actual time=15.289..44919.617 rows=39405 loops=1)
                     Buffers: shared hit=13837879 read=791652 written=7111
                     ->  Nested Loop Semi Join  (cost=2443.17..1955672.67 rows=1 width=34) (actual time=13.501..42095.809 rows=709509 loops=1)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           Buffers: shared hit=10284261 read=789582 written=7094
                           ->  Nested Loop  (cost=2442.61..1435166.01 rows=389563 width=38) (actual time=13.454..36883.818 rows=736406 loops=1)
                                 Buffers: shared hit=6717926 read=668465 written=5979
                                 ->  Hash Join  (cost=2442.17..1013167.58 rows=801673 width=34) (actual time=13.418..28228.507 rows=1525483 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=684228 read=591898 written=3903
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..927474.95 rows=20062479 width=8) (actual time=0.077..19741.109 rows=37928885 loops=1)
                                             Buffers: shared hit=682376 read=591885 written=3903
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30) (actual time=13.260..13.260 rows=4021 loops=1)
                                             Buckets: 4096  Batches: 1  Memory Usage: 284kB
                                             Buffers: shared hit=1849 read=13
                                             ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=30) (actual time=1.243..12.190 rows=4021 loops=1)
                                                   Buffers: shared hit=1849 read=13
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.012..0.016 rows=1 loops=1)
                                                         Filter: (n_name = 'RUSSIA'::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=1.223..11.409 rows=4021 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Heap Blocks: exact=1848
                                                         Buffers: shared hit=1848 read=13
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=0.852..0.852 rows=4021 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=13
                                 ->  Index Scan using pk_orders on orders  (cost=0.43..0.52 rows=1 width=4) (actual time=0.005..0.005 rows=0 loops=1525483)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=6033698 read=76567 written=2076
                           ->  Index Scan using pk_lineitem on lineitem l2  (cost=0.56..1.15 rows=15 width=8) (actual time=0.006..0.006 rows=1 loops=736406)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Filter: 0
                                 Buffers: shared hit=3566335 read=121117 written=1115
                     ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l3  (cost=0.56..0.91 rows=5 width=8) (actual time=0.003..0.003 rows=1 loops=709509)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
                           Rows Removed by Filter: 0
                           Buffers: shared hit=3553618 read=2070 written=17
 Planning time: 10.188 ms
 Execution time: 45002.921 ms
(54 rows)

COMMIT;
COMMIT