BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	sum(l_extendedprice) / 7.0 as avg_yearly
from
	lineitem,
	part
where
	p_partkey = l_partkey
	and p_brand = 'Brand#34'
	and p_container = 'JUMBO PACK'
	and l_quantity < (
		select
			0.2 * avg(l_quantity)
		from
			lineitem
		where
			l_partkey = p_partkey
	);
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Aggregate  (cost=361040.29..361040.30 rows=1 width=4) (actual time=813.524..813.524 rows=1 loops=1)
   Buffers: shared hit=50506 read=34763 dirtied=101
   ->  Nested Loop  (cost=130.19..360989.25 rows=20417 width=4) (actual time=0.975..812.569 rows=5537 loops=1)
         Buffers: shared hit=50506 read=34763 dirtied=101
         ->  Index Only Scan using part_p_container_p_brand_p_partkey_idx on part  (cost=0.43..8022.53 rows=2032 width=4) (actual time=0.204..28.479 rows=2029 loops=1)
               Index Cond: ((p_container = 'JUMBO PACK'::bpchar) AND (p_brand = 'Brand#34'::bpchar))
               Heap Fetches: 2029
               Buffers: shared hit=667 read=1327
         ->  Index Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem  (cost=129.76..173.60 rows=10 width=12) (actual time=0.005..0.007 rows=3 loops=2029)
               Index Cond: ((l_partkey = part.p_partkey) AND (l_quantity < (SubPlan 1)))
               Buffers: shared hit=13702
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.376..0.376 rows=1 loops=2029)
                       Buffers: shared hit=36137 read=33436 dirtied=101
                       ->  Index Only Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem lineitem_1  (cost=0.56..129.11 rows=31 width=4) (actual time=0.039..0.367 rows=30 loops=2029)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 61168
                             Buffers: shared hit=36137 read=33436 dirtied=101
               SubPlan 1
                 ->  Aggregate  (cost=129.19..129.20 rows=1 width=4) (actual time=0.376..0.376 rows=1 loops=2029)
                       Buffers: shared hit=36137 read=33436 dirtied=101
                       ->  Index Only Scan using lineitem_l_partkey_l_quantity_l_shipmode_idx on lineitem lineitem_1  (cost=0.56..129.11 rows=31 width=4) (actual time=0.039..0.367 rows=30 loops=2029)
                             Index Cond: (l_partkey = part.p_partkey)
                             Heap Fetches: 61168
                             Buffers: shared hit=36137 read=33436 dirtied=101
 Planning time: 2.936 ms
 Execution time: 813.712 ms
(27 rows)

COMMIT;
COMMIT