BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1993-06-01'
	and o_orderdate < cast(date '1993-06-01' + 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=1160387.86..1160387.87 rows=1 width=16) (actual time=10416.236..10416.237 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2636082 read=421979 written=2283
   ->  HashAggregate  (cost=1160387.84..1160387.85 rows=1 width=16) (actual time=10416.171..10416.171 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2636077 read=421979 written=2283
         ->  Nested Loop Semi Join  (cost=12635.91..1159602.32 rows=157104 width=16) (actual time=761.762..10142.492 rows=526735 loops=1)
               Buffers: shared hit=2636077 read=421979 written=2283
               ->  Bitmap Heap Scan on orders  (cost=12635.34..277668.55 rows=581747 width=20) (actual time=761.634..3392.934 rows=574338 loops=1)
                     Recheck Cond: ((o_orderdate >= '1993-06-01'::date) AND (o_orderdate < '1993-09-01'::date))
                     Heap Blocks: exact=230713
                     Buffers: shared hit=88445 read=143930 written=656
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12489.91 rows=581747 width=0) (actual time=681.435..681.435 rows=580596 loops=1)
                           Index Cond: ((o_orderdate >= '1993-06-01'::date) AND (o_orderdate < '1993-09-01'::date))
                           Buffers: shared read=1662
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.56 rows=5 width=4) (actual time=0.011..0.011 rows=1 loops=574338)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2547632 read=278049 written=1627
 Planning time: 2.884 ms
 Execution time: 10418.459 ms
(21 rows)

COMMIT;
COMMIT