BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1993-11-01'
	and o_orderdate < cast(date '1993-11-01' + 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=1151864.60..1151864.60 rows=1 width=16) (actual time=9806.430..9806.430 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2765699 read=288904 written=66
   ->  HashAggregate  (cost=1151864.58..1151864.59 rows=1 width=16) (actual time=9806.357..9806.358 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2765694 read=288904 written=66
         ->  Nested Loop Semi Join  (cost=12216.77..1151079.59 rows=156997 width=16) (actual time=405.590..9536.062 rows=526279 loops=1)
               Buffers: shared hit=2765694 read=288904 written=66
               ->  Bitmap Heap Scan on orders  (cost=12216.20..275148.57 rows=576758 width=20) (actual time=405.478..2166.032 rows=574039 loops=1)
                     Recheck Cond: ((o_orderdate >= '1993-11-01'::date) AND (o_orderdate < '1994-02-01'::date))
                     Heap Blocks: exact=229037
                     Buffers: shared hit=212979 read=17628
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12072.01 rows=576758 width=0) (actual time=294.732..294.732 rows=575753 loops=1)
                           Index Cond: ((o_orderdate >= '1993-11-01'::date) AND (o_orderdate < '1994-02-01'::date))
                           Buffers: shared read=1570
               ->  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=574039)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2552715 read=271276 written=66
 Planning time: 2.972 ms
 Execution time: 9808.852 ms
(21 rows)

COMMIT;
COMMIT