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) > 314
	)
	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=10161926.32..10161929.07 rows=100 width=39) (actual time=97872.361..97872.624 rows=84 loops=1)
   Buffers: shared hit=1802929 read=621228 written=7
   ->  GroupAggregate  (cost=10161926.32..10988377.94 rows=30052786 width=39) (actual time=97872.357..97872.607 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1802929 read=621228 written=7
         ->  Sort  (cost=10161926.32..10237058.29 rows=30052786 width=39) (actual time=97872.339..97872.370 rows=588 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 70kB
               Buffers: shared hit=1802929 read=621228 written=7
               ->  Hash Join  (cost=2887013.50..5607462.73 rows=30052786 width=39) (actual time=74836.786..97870.835 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1802917 read=621228 written=7
                     ->  Seq Scan on lineitem  (cost=0.00..1668601.72 rows=60105572 width=8) (actual time=0.042..11803.477 rows=60045603 loops=1)
                           Buffers: shared hit=849030 read=218516
                     ->  Hash  (cost=2793076.20..2793076.20 rows=7514984 width=39) (actual time=74551.388..74551.388 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=953887 read=402712 written=7
                           ->  Hash Join  (cost=2179523.98..2793076.20 rows=7514984 width=39) (actual time=65490.763..74547.060 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=953887 read=402712 written=7
                                 ->  Hash Join  (cost=2110495.98..2611323.44 rows=7514984 width=20) (actual time=63969.379..73019.480 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=953885 read=367436 written=7
                                       ->  Seq Scan on orders  (cost=0.00..404074.68 rows=15029968 width=16) (actual time=0.010..3439.733 rows=15015000 loops=1)
                                             Buffers: shared hit=223234 read=30541 written=2
                                       ->  Hash  (cost=2060007.98..2060007.98 rows=4039040 width=4) (actual time=63342.877..63342.877 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=730651 read=336895 written=5
                                             ->  HashAggregate  (cost=1969129.58..2019617.58 rows=4039040 width=8) (actual time=51427.891..63340.148 rows=84 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 314::double precision)
                                                   Rows Removed by Filter: 15014916
                                                   Buffers: shared hit=730651 read=336895 written=5
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1668601.72 rows=60105572 width=8) (actual time=0.020..13428.398 rows=60045603 loops=1)
                                                         Buffers: shared hit=730651 read=336895 written=5
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1496.871..1496.871 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=2 read=35276
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.029..807.452 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Planning time: 4.832 ms
 Execution time: 98319.789 ms
(42 rows)

COMMIT;
COMMIT