load 'auto_explain';
LOAD
set auto_explain.log_min_duration to 0;
SET
set auto_explain.log_analyze to on;
SET
set auto_explain.log_wal to on;
SET
set auto_explain.log_timing to on;
SET
set auto_explain.log_level to notice;
SET
BEGIN;
BEGIN
select
	cntrycode,
	count(*) as numcust,
	sum(c_acctbal) as totacctbal
from
	(
		select
			substring(c_phone from 1 for 2) as cntrycode,
			c_acctbal
		from
			customer
		where
			substring(c_phone from 1 for 2) in
				('21', '33', '18', '10', '32', '28', '11')
			and c_acctbal > (
				select
					avg(c_acctbal)
				from
					customer
				where
					c_acctbal > 0.00
					and substring(c_phone from 1 for 2) in
						('21', '33', '18', '10', '32', '28', '11')
			)
			and not exists (
				select
					*
				from
					orders
				where
					o_custkey = c_custkey
			)
	) as vip
group by
	cntrycode
order by
	cntrycode;
NOTICE:  duration: 1663.454 ms  plan:
Query Text: select
	cntrycode,
	count(*) as numcust,
	sum(c_acctbal) as totacctbal
from
	(
		select
			substring(c_phone from 1 for 2) as cntrycode,
			c_acctbal
		from
			customer
		where
			substring(c_phone from 1 for 2) in
				('21', '33', '18', '10', '32', '28', '11')
			and c_acctbal > (
				select
					avg(c_acctbal)
				from
					customer
				where
					c_acctbal > 0.00
					and substring(c_phone from 1 for 2) in
						('21', '33', '18', '10', '32', '28', '11')
			)
			and not exists (
				select
					*
				from
					orders
				where
					o_custkey = c_custkey
			)
	) as vip
group by
	cntrycode
order by
	cntrycode;
Finalize GroupAggregate  (cost=121644.78..121651.55 rows=25 width=72) (actual time=1654.580..1663.431 rows=7 loops=1)
  Group Key: (SUBSTRING(customer.c_phone FROM 1 FOR 2))
  InitPlan 1 (returns $1)
    ->  Finalize Aggregate  (cost=49997.06..49997.07 rows=1 width=32) (actual time=492.693..494.850 rows=1 loops=1)
          ->  Gather  (cost=49996.84..49997.05 rows=2 width=32) (actual time=488.440..494.825 rows=3 loops=1)
                Workers Planned: 2
                Workers Launched: 2
                ->  Partial Aggregate  (cost=48996.84..48996.85 rows=1 width=32) (actual time=475.857..475.858 rows=1 loops=3)
                      ->  Parallel Bitmap Heap Scan on customer customer_1  (cost=8589.12..48601.91 rows=157973 width=6) (actual time=116.702..420.362 rows=127421 loops=3)
                            Recheck Cond: ((SUBSTRING(c_phone FROM 1 FOR 2) = ANY ('{21,33,18,10,32,28,11}'::text[])) AND (c_acctbal > 0.00))
                            Heap Blocks: exact=12480
                            ->  Bitmap Index Scan on customer_c_phone_c_acctbal_c_custkey_idx  (cost=0.00..8494.33 rows=379135 width=0) (actual time=114.709..114.710 rows=382262 loops=1)
                                  Index Cond: ((SUBSTRING(c_phone FROM 1 FOR 2) = ANY ('{21,33,18,10,32,28,11}'::text[])) AND (c_acctbal > 0.00))
  ->  Gather Merge  (cost=71647.71..71653.54 rows=50 width=72) (actual time=1654.559..1661.234 rows=14 loops=1)
        Workers Planned: 2
        Params Evaluated: $1
        Workers Launched: 1
        ->  Sort  (cost=70647.68..70647.75 rows=25 width=72) (actual time=1140.946..1140.950 rows=7 loops=2)
              Sort Key: (SUBSTRING(customer.c_phone FROM 1 FOR 2))
              Sort Method: quicksort  Memory: 25kB
              Worker 0:  Sort Method: quicksort  Memory: 25kB
              ->  Partial HashAggregate  (cost=70646.66..70647.10 rows=25 width=72) (actual time=1140.879..1140.888 rows=7 loops=2)
                    Group Key: SUBSTRING(customer.c_phone FROM 1 FOR 2)
                    Batches: 1  Memory Usage: 24kB
                    Worker 0:  Batches: 1  Memory Usage: 24kB
                    ->  Nested Loop Anti Join  (cost=3309.55..70460.97 rows=24759 width=38) (actual time=75.882..1115.773 rows=31860 loops=2)
                          ->  Parallel Bitmap Heap Scan on customer  (cost=3309.11..40701.12 rows=58134 width=26) (actual time=75.758..329.505 rows=95389 loops=2)
                                Recheck Cond: ((SUBSTRING(c_phone FROM 1 FOR 2) = ANY ('{21,33,18,10,32,28,11}'::text[])) AND (c_acctbal > $1))
                                Heap Blocks: exact=17619
                                ->  Bitmap Index Scan on customer_c_phone_c_acctbal_c_custkey_idx  (cost=0.00..3274.23 rows=139521 width=0) (actual time=74.964..74.964 rows=190778 loops=1)
                                      Index Cond: ((SUBSTRING(c_phone FROM 1 FOR 2) = ANY ('{21,33,18,10,32,28,11}'::text[])) AND (c_acctbal > $1))
                          ->  Index Only Scan using orders_o_custkey_idx on orders  (cost=0.43..1.17 rows=17 width=4) (actual time=0.007..0.007 rows=1 loops=190778)
                                Index Cond: (o_custkey = customer.c_custkey)
                                Heap Fetches: 7240
 cntrycode | numcust | totacctbal  
-----------+---------+-------------
 10        |    9066 | 67817376.35
 11        |    9019 | 67959506.13
 18        |    9218 | 69352755.56
 21        |    9089 | 68289615.91
 28        |    9033 | 67690071.79
 32        |    9109 | 68455178.19
 33        |    9186 | 68915102.82
(7 rows)

COMMIT;
COMMIT