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=10195174.29..10195177.04 rows=100 width=39) (actual time=108955.868..108956.149 rows=84 loops=1)
   Buffers: shared hit=1498073 read=933231 dirtied=432 written=3308
   ->  GroupAggregate  (cost=10195174.29..11024101.56 rows=30142810 width=39) (actual time=108955.863..108956.136 rows=84 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1498073 read=933231 dirtied=432 written=3308
         ->  Sort  (cost=10195174.29..10270531.31 rows=30142810 width=39) (actual time=108955.847..108955.877 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=1498073 read=933231 dirtied=432 written=3308
               ->  Hash Join  (cost=2897823.85..5626418.41 rows=30142810 width=39) (actual time=81260.356..108954.534 rows=588 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1498061 read=933231 dirtied=432 written=3308
                     ->  Seq Scan on lineitem  (cost=0.00..1673596.20 rows=60285620 width=8) (actual time=0.028..14306.869 rows=60046221 loops=1)
                           Buffers: shared hit=736901 read=333839 written=3
                     ->  Hash  (cost=2803605.60..2803605.60 rows=7537460 width=39) (actual time=81119.336..81119.336 rows=84 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65542kB
                           Buffers: shared hit=761160 read=599392 dirtied=432 written=3305
                           ->  Hash Join  (cost=2187690.17..2803605.60 rows=7537460 width=39) (actual time=70425.223..81118.729 rows=84 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=761160 read=599392 dirtied=432 written=3305
                                 ->  Hash Join  (cost=2118662.17..2621515.71 rows=7537460 width=20) (actual time=69060.743..79748.081 rows=84 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=761158 read=564116 dirtied=432 written=3305
                                       ->  Seq Scan on orders  (cost=0.00..405283.20 rows=15074920 width=16) (actual time=0.011..4542.021 rows=15015000 loops=1)
                                             Buffers: shared hit=149287 read=105247 written=3037
                                       ->  Hash  (cost=2067362.93..2067362.93 rows=4103939 width=4) (actual time=68882.454..68882.454 rows=84 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32771kB
                                             Buffers: shared hit=611871 read=458869 dirtied=432 written=268
                                             ->  HashAggregate  (cost=1975024.30..2026323.54 rows=4103939 width=8) (actual time=58058.009..68881.156 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=611871 read=458869 dirtied=432 written=268
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1673596.20 rows=60285620 width=8) (actual time=0.016..16548.028 rows=60046221 loops=1)
                                                         Buffers: shared hit=611871 read=458869 dirtied=432 written=268
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=1351.051..1351.051 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=0.022..846.435 rows=1500000 loops=1)
                                             Buffers: shared hit=2 read=35276
 Planning time: 5.379 ms
 Execution time: 109229.203 ms
(42 rows)

COMMIT;
COMMIT