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=4852002.73..4852002.73 rows=1 width=26) (actual time=102699.953..102699.972 rows=100 loops=1)
   Buffers: shared hit=10313843 read=1217959 written=3, temp read=161514 written=161508
   ->  Sort  (cost=4852002.73..4852002.73 rows=1 width=26) (actual time=102699.949..102699.955 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10313843 read=1217959 written=3, temp read=161514 written=161508
         ->  HashAggregate  (cost=4852002.71..4852002.72 rows=1 width=26) (actual time=102695.353..102697.246 rows=3989 loops=1)
               Buffers: shared hit=10313835 read=1217959 written=3, temp read=161514 written=161508
               ->  Nested Loop Anti Join  (cost=2680975.39..4852002.70 rows=1 width=26) (actual time=36435.751..102594.868 rows=39735 loops=1)
                     Buffers: shared hit=10313835 read=1217959 written=3, temp read=161514 written=161508
                     ->  Nested Loop  (cost=2680975.39..4851987.56 rows=1 width=34) (actual time=36431.844..92869.087 rows=703393 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7209964 read=788906, temp read=161514 written=161508
                           ->  Hash Semi Join  (cost=2680975.39..4851985.57 rows=1 width=38) (actual time=36431.783..83677.115 rows=1458744 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 378124
                                 Buffers: shared hit=1375084 read=781027, temp read=161514 written=161508
                                 ->  Hash Join  (cost=2441.58..1921510.64 rows=807707 width=34) (actual time=29.893..31459.812 rows=1512728 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=793074 read=285917
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1835185.45 rows=20215079 width=8) (actual time=0.026..21605.776 rows=37927978 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22056848
                                             Buffers: shared hit=791490 read=285630
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=29.819..29.819 rows=3990 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 250kB
                                             Buffers: shared hit=1581 read=287
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=1.225..28.427 rows=3990 loops=1)
                                                   Buffers: shared hit=1581 read=287
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.008..0.013 rows=1 loops=1)
                                                         Filter: (n_name = 'MOROCCO'::bpchar)
                                                         Rows Removed by Filter: 24
                                                         Buffers: shared hit=1
                                                   ->  Bitmap Heap Scan on supplier  (cost=79.26..2350.26 rows=4000 width=34) (actual time=1.211..27.461 rows=3990 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1580 read=287
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=0.914..0.914 rows=3990 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared hit=2 read=12
                                 ->  Hash  (cost=1683572.36..1683572.36 rows=60645236 width=8) (actual time=36375.098..36375.098 rows=59984826 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 585983kB
                                       Buffers: shared hit=582010 read=495110, temp written=153751
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1683572.36 rows=60645236 width=8) (actual time=0.014..18341.147 rows=59984826 loops=1)
                                             Buffers: shared hit=582010 read=495110
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.97 rows=1 width=4) (actual time=0.006..0.006 rows=0 loops=1458744)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5834880 read=7879
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.55 rows=5 width=8) (actual time=0.013..0.013 rows=1 loops=703393)
                           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=3103871 read=429053 written=3
 Total runtime: 102700.994 ms
(56 rows)

COMMIT;
COMMIT