BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1995-07-01'
	and o_orderdate < cast(date '1995-07-01' + interval '3 month' as date)
	and exists (
		select
			*
		from
			lineitem
		where
			l_orderkey = o_orderkey
			and l_commitdate < l_receiptdate
	)
group by
	o_orderpriority
order by
	o_orderpriority;
                                                                                  QUERY PLAN                                                                                  
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=1152678.24..1152678.24 rows=1 width=16) (actual time=9978.759..9978.759 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2724516 read=330264 dirtied=125 written=1969
   ->  HashAggregate  (cost=1152678.22..1152678.23 rows=1 width=16) (actual time=9978.661..9978.662 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2724511 read=330264 dirtied=125 written=1969
         ->  Nested Loop Semi Join  (cost=12235.22..1151890.72 rows=157499 width=16) (actual time=446.416..9705.138 rows=526338 loops=1)
               Buffers: shared hit=2724511 read=330264 dirtied=125 written=1969
               ->  Bitmap Heap Scan on orders  (cost=12234.65..274923.46 rows=577387 width=20) (actual time=446.292..2507.351 rows=574099 loops=1)
                     Recheck Cond: ((o_orderdate >= '1995-07-01'::date) AND (o_orderdate < '1995-10-01'::date))
                     Heap Blocks: exact=228891
                     Buffers: shared hit=167001 read=63461 dirtied=125 written=330
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12090.30 rows=577387 width=0) (actual time=326.025..326.025 rows=575830 loops=1)
                           Index Cond: ((o_orderdate >= '1995-07-01'::date) AND (o_orderdate < '1995-10-01'::date))
                           Buffers: shared read=1571
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.55 rows=5 width=4) (actual time=0.012..0.012 rows=1 loops=574099)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2557510 read=266803 written=1639
 Planning time: 4.288 ms
 Execution time: 9980.547 ms
(21 rows)

COMMIT;
COMMIT