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 = 'JORDAN'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                                 QUERY PLAN                                                                                                 
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=1957900.79..1957900.80 rows=1 width=26) (actual time=51412.751..51412.769 rows=100 loops=1)
   Buffers: shared hit=13649354 read=691553 written=6696
   ->  Sort  (cost=1957900.79..1957900.80 rows=1 width=26) (actual time=51412.749..51412.758 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=13649354 read=691553 written=6696
         ->  HashAggregate  (cost=1957900.77..1957900.78 rows=1 width=26) (actual time=51410.217..51411.550 rows=3933 loops=1)
               Group Key: supplier.s_name
               Buffers: shared hit=13649346 read=691553 written=6696
               ->  Nested Loop Anti Join  (cost=2443.74..1957900.77 rows=1 width=26) (actual time=17.812..51310.486 rows=39074 loops=1)
                     Buffers: shared hit=13649346 read=691553 written=6696
                     ->  Nested Loop Semi Join  (cost=2443.17..1957899.46 rows=1 width=34) (actual time=17.513..48302.504 rows=694310 loops=1)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           Buffers: shared hit=10171304 read=689935 written=6678
                           ->  Nested Loop  (cost=2442.61..1435667.04 rows=390856 width=38) (actual time=17.490..42241.579 rows=720767 loops=1)
                                 Buffers: shared hit=6691757 read=559661 written=5555
                                 ->  Hash Join  (cost=2442.17..1013275.85 rows=802409 width=34) (actual time=17.450..32449.949 rows=1491961 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=788401 read=487014 written=5262
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..927584.34 rows=20060216 width=8) (actual time=0.104..20758.149 rows=37928885 loops=1)
                                             Buffers: shared hit=786540 read=487001 written=5262
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30) (actual time=17.271..17.271 rows=3933 loops=1)
                                             Buckets: 4096  Batches: 1  Memory Usage: 278kB
                                             Buffers: shared hit=1858 read=13
                                             ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=30) (actual time=1.335..16.005 rows=3933 loops=1)
                                                   Buffers: shared hit=1858 read=13
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.014..0.023 rows=1 loops=1)
                                                         Filter: (n_name = 'JORDAN'::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=1.314..15.213 rows=3933 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Heap Blocks: exact=1857
                                                         Buffers: shared hit=1857 read=13
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=1.008..1.008 rows=3933 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=13
                                 ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.43..0.52 rows=1 width=4) (actual time=0.006..0.006 rows=0 loops=1491961)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=5903356 read=72647 written=293
                           ->  Index Scan using lineitem_l_orderkey_idx on lineitem l2  (cost=0.56..1.15 rows=15 width=8) (actual time=0.008..0.008 rows=1 loops=720767)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Filter: 0
                                 Buffers: shared hit=3479547 read=130274 written=1123
                     ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l3  (cost=0.56..0.91 rows=5 width=8) (actual time=0.004..0.004 rows=1 loops=694310)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
                           Rows Removed by Filter: 0
                           Buffers: shared hit=3478042 read=1618 written=18
 Planning time: 11.460 ms
 Execution time: 51413.277 ms
(54 rows)

COMMIT;
COMMIT