BEGIN;
BEGIN
EXPLAIN
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=10142318.26..10142321.01 rows=100 width=39)
   ->  GroupAggregate  (cost=10142318.26..10967128.45 rows=29993098 width=39)
         Group Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
         ->  Sort  (cost=10142318.26..10217301.00 rows=29993098 width=39)
               Sort Key: orders.o_totalprice, orders.o_orderdate, customer.c_name, customer.c_custkey, orders.o_orderkey
               ->  Hash Join  (cost=2882291.95..5597329.34 rows=29993098 width=39)
                     Hash Cond: (lineitem.l_orderkey = orders.o_orderkey)
                     ->  Seq Scan on lineitem  (cost=0.00..1665278.96 rows=59986196 width=8)
                     ->  Hash  (cost=2788541.95..2788541.95 rows=7500000 width=39)
                           ->  Hash Join  (cost=2176015.17..2788541.95 rows=7500000 width=39)
                                 Hash Cond: (orders.o_custkey = customer.c_custkey)
                                 ->  Hash Join  (cost=2106987.17..2607013.95 rows=7500000 width=20)
                                       Hash Cond: (orders.o_orderkey = lineitem_1.l_orderkey)
                                       ->  Seq Scan on orders  (cost=0.00..403269.00 rows=15000000 width=16)
                                       ->  Hash  (cost=2056352.45..2056352.45 rows=4050778 width=4)
                                             ->  HashAggregate  (cost=1965209.94..2015844.67 rows=4050778 width=8)
                                                   Group Key: lineitem_1.l_orderkey
                                                   Filter: (sum(lineitem_1.l_quantity) > 312::double precision)
                                                   ->  Seq Scan on lineitem lineitem_1  (cost=0.00..1665278.96 rows=59986196 width=8)
                                 ->  Hash  (cost=50278.00..50278.00 rows=1500000 width=23)
                                       ->  Seq Scan on customer  (cost=0.00..50278.00 rows=1500000 width=23)
 Planning time: 3.116 ms
(22 rows)

COMMIT;
COMMIT