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=1966033.56..1966033.56 rows=1 width=26) (actual time=43881.966..43881.984 rows=100 loops=1)
   Buffers: shared hit=13934373 read=706985 dirtied=590 written=11433
   ->  Sort  (cost=1966033.56..1966033.56 rows=1 width=26) (actual time=43881.963..43881.969 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=13934373 read=706985 dirtied=590 written=11433
         ->  HashAggregate  (cost=1966033.54..1966033.55 rows=1 width=26) (actual time=43878.902..43880.824 rows=4021 loops=1)
               Group Key: supplier.s_name
               Buffers: shared hit=13934365 read=706985 dirtied=590 written=11433
               ->  Nested Loop Anti Join  (cost=2443.74..1966033.53 rows=1 width=26) (actual time=17.141..43792.938 rows=39423 loops=1)
                     Buffers: shared hit=13934365 read=706985 dirtied=590 written=11433
                     ->  Nested Loop Semi Join  (cost=2443.17..1966032.22 rows=1 width=34) (actual time=15.241..41264.954 rows=709521 loops=1)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           Buffers: shared hit=10380503 read=705102 dirtied=590 written=11405
                           ->  Nested Loop  (cost=2442.61..1440468.10 rows=393320 width=38) (actual time=15.218..36145.082 rows=736424 loops=1)
                                 Buffers: shared hit=6845714 read=552364 dirtied=590 written=9042
                                 ->  Hash Join  (cost=2442.17..1016463.63 rows=805401 width=34) (actual time=15.195..27810.361 rows=1525444 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=796036 read=491952 dirtied=590 written=8089
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..930461.64 rows=20135033 width=8) (actual time=0.076..18399.133 rows=37927958 loops=1)
                                             Buffers: shared hit=794184 read=491939 dirtied=590 written=8089
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30) (actual time=15.041..15.041 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=1.190..13.998 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=0.010..0.014 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=1.174..13.230 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=0.882..0.882 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=1525444)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=6049678 read=60412 written=953
                           ->  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=736424)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Filter: 0
                                 Buffers: shared hit=3534789 read=152738 written=2363
                     ->  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=709521)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
                           Rows Removed by Filter: 0
                           Buffers: shared hit=3553862 read=1883 written=28
 Planning time: 10.003 ms
 Execution time: 43882.342 ms
(54 rows)

COMMIT;
COMMIT