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) > 312
	)
	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=10262902.91..10262905.66 rows=100 width=39) (actual time=88505.156..88505.442 rows=100 loops=1)
   Buffers: shared hit=1656024 read=791949 dirtied=800 written=783
   ->  GroupAggregate  (cost=10262902.91..11097593.14 rows=30352372 width=39) (actual time=88505.152..88505.426 rows=100 loops=1)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         Buffers: shared hit=1656024 read=791949 dirtied=800 written=783
         ->  Sort  (cost=10262902.91..10338783.84 rows=30352372 width=39) (actual time=88505.134..88505.167 rows=701 loops=1)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               Sort Method: quicksort  Memory: 86kB
               Buffers: shared hit=1656024 read=791949 dirtied=800 written=783
               ->  Hash Join  (cost=2913298.97..5660867.45 rows=30352372 width=39) (actual time=65084.106..88503.433 rows=791 loops=1)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=1656012 read=791949 dirtied=800 written=783
                     ->  Seq Scan on lineitem  (cost=0.00..1685235.44 rows=60704744 width=8) (actual time=0.026..12328.690 rows=60044994 loops=1)
                           Buffers: shared hit=891878 read=186310 written=3
                     ->  Hash  (cost=2818424.42..2818424.42 rows=7589964 width=39) (actual time=64423.989..64423.989 rows=113 loops=1)
                           Buckets: 8388608  Batches: 1  Memory Usage: 65544kB
                           Buffers: shared hit=764134 read=605639 dirtied=800 written=780
                           ->  Hash Join  (cost=2199153.56..2818424.42 rows=7589964 width=39) (actual time=56668.641..64421.601 rows=113 loops=1)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 Buffers: shared hit=764134 read=605639 dirtied=800 written=780
                                 ->  Hash Join  (cost=2130125.56..2635546.96 rows=7589964 width=20) (actual time=55661.538..63407.387 rows=113 loops=1)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       Buffers: shared hit=728856 read=605639 dirtied=800 written=780
                                       ->  Seq Scan on orders  (cost=0.00..408106.27 rows=15179927 width=16) (actual time=0.008..3693.961 rows=15015000 loops=1)
                                             Buffers: shared hit=164507 read=91800 written=26
                                       ->  Hash  (cost=2079637.56..2079637.56 rows=4039040 width=4) (actual time=55529.119..55529.119 rows=113 loops=1)
                                             Buckets: 4194304  Batches: 1  Memory Usage: 32772kB
                                             Buffers: shared hit=564349 read=513839 dirtied=800 written=754
                                             ->  HashAggregate  (cost=1988759.16..2039247.16 rows=4039040 width=8) (actual time=41920.077..55528.311 rows=113 loops=1)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 312::double precision)
                                                   Rows Removed by Filter: 15014887
                                                   Buffers: shared hit=564349 read=513839 dirtied=800 written=754
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1685235.44 rows=60704744 width=8) (actual time=0.012..12285.431 rows=60044994 loops=1)
                                                         Buffers: shared hit=564349 read=513839 dirtied=800 written=754
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23) (actual time=991.934..991.934 rows=1500000 loops=1)
                                       Buckets: 2097152  Batches: 1  Memory Usage: 98416kB
                                       Buffers: shared hit=35278
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23) (actual time=0.016..520.530 rows=1500000 loops=1)
                                             Buffers: shared hit=35278
 Planning time: 4.086 ms
 Execution time: 88752.561 ms
(42 rows)

COMMIT;
COMMIT