BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	c_name,
	c_custkey,
	o_orderkey,
	o_orderdate,
	o_totalprice,
	sum(l_quantity)
from
	customer,
	orders,
	lineitem
where
	o_orderkey in (
		select
			l_orderkey
		from
			lineitem
		group by
			l_orderkey having
				sum(l_quantity) > 313
	)
	and c_custkey = o_custkey
	and o_orderkey = l_orderkey
group by
	c_name,
	c_custkey,
	o_orderkey,
	o_orderdate,
	o_totalprice
order by
	o_totalprice desc,
	o_orderdate
LIMIT 100;
                                                                                        QUERY PLAN                                                                                         
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=10205217.40..10205220.15 rows=100 width=39) (actual time=91987.751..91988.072 rows=99 loops=1)
   Buffers: shared hit=1718835 read=714838 dirtied=31 written=50
   ->  GroupAggregate  (cost=10205217.40..11034963.74 rows=30172594 width=39) (actual time=91987.748..91988.059 rows=99 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1718835 read=714838 dirtied=31 written=50
         ->  Sort  (cost=10205217.40..10280648.89 rows=30172594 width=39) (actual time=91987.732..91987.771 rows=693 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 79kB
               Buffers: shared hit=1718835 read=714838 dirtied=31 written=50
               ->  Hash Join  (cost=2900440.44..5631731.11 rows=30172594 width=39) (actual time=70091.726..91986.191 rows=693 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1718823 read=714838 dirtied=31 written=50
                     ->  Seq Scan on lineitem  (cost=0.00..1675249.88 rows=60345188 width=8) (actual time=0.032..12674.891 rows=60045826 loops=1)
                           Buffers: shared hit=881820 read=189978 dirtied=30 written=27
                     ->  Hash  (cost=2806128.54..2806128.54 rows=7544952 width=39) (actual time=69980.642..69980.642 rows=99 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65543kB
                           Buffers: shared hit=837003 read=524860 dirtied=1 written=23
                           ->  Hash Join  (cost=2189641.68..2806128.54 rows=7544952 width=39) (actual time=60586.515..69980.021 rows=99 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=837003 read=524860 dirtied=1 written=23
                                 ->  Hash Join  (cost=2120613.68..2623926.25 rows=7544952 width=20) (actual time=59134.814..68521.345 rows=99 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=830999 read=495586 dirtied=1 written=23
                                       ->  Seq Scan on orders  (cost=0.00..405686.04 rows=15089904 width=16) (actual time=0.012..3590.431 rows=15015000 loops=1)
                                             Buffers: shared hit=215154 read=39633 dirtied=1 written=21
                                       ->  Hash  (cost=2069314.45..2069314.45 rows=4103939 width=4) (actual time=58976.613..58976.613 rows=99 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=615845 read=455953 written=2
                                             ->  HashAggregate  (cost=1976975.82..2028275.06 rows=4103939 width=8) (actual time=50563.180..58975.530 rows=99 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 313::double precision)
                                                   Rows Removed by Filter: 15014901
                                                   Buffers: shared hit=615845 read=455953 written=2
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1675249.88 rows=60345188 width=8) (actual time=0.016..15084.136 rows=60045826 loops=1)
                                                         Buffers: shared hit=615845 read=455953 written=2
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1434.178..1434.178 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=6004 read=29274
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.024..822.116 rows=1500000 loops=1)
                                             Buffers: shared hit=6004 read=29274
 Planning time: 5.224 ms
 Execution time: 92240.660 ms
(42 rows)

COMMIT;
COMMIT