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=10195014.54..10195017.29 rows=100 width=39) (actual time=80734.026..80734.288 rows=84 loops=1)
   Buffers: shared hit=1483261 read=948043 dirtied=1 written=22
   ->  GroupAggregate  (cost=10195014.54..11023946.49 rows=30142980 width=39) (actual time=80734.023..80734.275 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1483261 read=948043 dirtied=1 written=22
         ->  Sort  (cost=10195014.54..10270371.99 rows=30142980 width=39) (actual time=80734.010..80734.052 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=1483261 read=948043 dirtied=1 written=22
               ->  Hash Join  (cost=2897625.39..5626229.31 rows=30142980 width=39) (actual time=59981.416..80732.755 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1483249 read=948043 dirtied=1 written=22
                     ->  Seq Scan on lineitem  (cost=0.00..1673599.61 rows=60285961 width=8) (actual time=0.028..12208.228 rows=60046221 loops=1)
                           Buffers: shared hit=571532 read=499208 dirtied=1
                     ->  Hash  (cost=2803407.14..2803407.14 rows=7537460 width=39) (actual time=58104.794..58104.794 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=911717 read=448835 written=22
                           ->  Hash Join  (cost=2187536.94..2803407.14 rows=7537460 width=39) (actual time=51602.357..58104.617 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=911717 read=448835 written=22
                                 ->  Hash Join  (cost=2118508.94..2621317.24 rows=7537460 width=20) (actual time=50539.729..57041.723 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=884301 read=440973 written=10
                                       ->  Seq Scan on orders  (cost=0.00..405283.20 rows=15074920 width=16) (actual time=0.010..3496.534 rows=15015000 loops=1)
                                             Buffers: shared hit=213333 read=41201 written=9
                                       ->  Hash  (cost=2067266.25..2067266.25 rows=4099415 width=4) (actual time=50404.071..50404.071 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=670968 read=399772 written=1
                                             ->  HashAggregate  (cost=1975029.42..2026272.10 rows=4099415 width=8) (actual time=42487.843..50403.720 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=670968 read=399772 written=1
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1673599.61 rows=60285961 width=8) (actual time=0.013..13336.234 rows=60046221 loops=1)
                                                         Buffers: shared hit=670968 read=399772 written=1
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1051.737..1051.737 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=27416 read=7862 written=12
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.031..599.199 rows=1500000 loops=1)
                                             Buffers: shared hit=27416 read=7862 written=12
 Planning time: 4.693 ms
 Execution time: 80981.020 ms
(42 rows)

COMMIT;
COMMIT