BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1994-11-01'
	and o_orderdate < cast(date '1994-11-01' + 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=1142994.32..1142994.32 rows=1 width=16) (actual time=9947.189..9947.190 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2767177 read=295656
   ->  HashAggregate  (cost=1142994.30..1142994.31 rows=1 width=16) (actual time=9947.101..9947.102 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2767172 read=295656
         ->  Nested Loop Semi Join  (cost=12080.37..1142216.52 rows=155555 width=16) (actual time=462.441..9641.347 rows=528033 loops=1)
               Buffers: shared hit=2767172 read=295656
               ->  Bitmap Heap Scan on orders  (cost=12079.81..274400.23 rows=569695 width=20) (actual time=462.332..2040.873 rows=575748 loops=1)
                     Recheck Cond: ((o_orderdate >= '1994-11-01'::date) AND (o_orderdate < '1995-02-01'::date))
                     Heap Blocks: exact=228746
                     Buffers: shared hit=224417 read=5904
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11937.39 rows=569695 width=0) (actual time=352.791..352.791 rows=576328 loops=1)
                           Index Cond: ((o_orderdate >= '1994-11-01'::date) AND (o_orderdate < '1995-02-01'::date))
                           Buffers: shared read=1575
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.57 rows=5 width=4) (actual time=0.012..0.012 rows=1 loops=575748)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2542755 read=289752
 Planning time: 3.831 ms
 Execution time: 9949.112 ms
(21 rows)

COMMIT;
COMMIT