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 = 'MOROCCO'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                                 QUERY PLAN                                                                                                 
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=1972630.83..1972630.83 rows=1 width=26) (actual time=42474.653..42474.672 rows=100 loops=1)
   Buffers: shared hit=13765305 read=783714 dirtied=2142 written=3691
   ->  Sort  (cost=1972630.83..1972630.83 rows=1 width=26) (actual time=42474.650..42474.658 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=13765305 read=783714 dirtied=2142 written=3691
         ->  HashAggregate  (cost=1972630.81..1972630.82 rows=1 width=26) (actual time=42472.451..42473.554 rows=3989 loops=1)
               Group Key: supplier.s_name
               Buffers: shared hit=13765297 read=783714 dirtied=2142 written=3691
               ->  Nested Loop Anti Join  (cost=2443.74..1972630.80 rows=1 width=26) (actual time=17.074..42416.311 rows=39779 loops=1)
                     Buffers: shared hit=13765297 read=783714 dirtied=2142 written=3691
                     ->  Nested Loop Semi Join  (cost=2443.17..1972629.49 rows=1 width=34) (actual time=14.805..39798.723 rows=704113 loops=1)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           Buffers: shared hit=10238780 read=781646 dirtied=2142 written=3687
                           ->  Nested Loop  (cost=2442.61..1447557.31 rows=392911 width=38) (actual time=14.693..34776.733 rows=731015 loops=1)
                                 Buffers: shared hit=6722194 read=637652 dirtied=2142 written=2916
                                 ->  Hash Join  (cost=2442.17..1021854.76 rows=808564 width=34) (actual time=14.649..26799.716 rows=1514303 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=670643 read=623902 dirtied=2142 written=2778
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..935446.58 rows=20234915 width=8) (actual time=0.081..19324.030 rows=37966174 loops=1)
                                             Buffers: shared hit=668786 read=623889 dirtied=2142 written=2777
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30) (actual time=14.522..14.522 rows=3990 loops=1)
                                             Buckets: 4096  Batches: 1  Memory Usage: 282kB
                                             Buffers: shared hit=1854 read=13 written=1
                                             ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=30) (actual time=1.234..13.419 rows=3990 loops=1)
                                                   Buffers: shared hit=1854 read=13 written=1
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.009..0.014 rows=1 loops=1)
                                                         Filter: (n_name = 'MOROCCO'::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=1.219..12.701 rows=3990 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Heap Blocks: exact=1853
                                                         Buffers: shared hit=1853 read=13 written=1
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=0.924..0.924 rows=3990 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=13 written=1
                                 ->  Index Scan using pk_orders on orders  (cost=0.43..0.52 rows=1 width=4) (actual time=0.004..0.005 rows=0 loops=1514303)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=6051551 read=13750 written=138
                           ->  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=731015)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Filter: 0
                                 Buffers: shared hit=3516586 read=143994 written=771
                     ->  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=704113)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
                           Rows Removed by Filter: 0
                           Buffers: shared hit=3526517 read=2068 written=4
 Planning time: 10.162 ms
 Execution time: 42475.031 ms
(54 rows)

COMMIT;
COMMIT