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int.log
pgtest
...
BEGIN
DROP TABLE
NOTICE: table "parent_1" does not exist, skipping
DROP TABLE
NOTICE: table "parent_2" does not exist, skipping
DROP TABLE
NOTICE: table "child_surrogate" does not exist, skipping
NOTICE: table "child_natural" does not exist, skipping
DROP TABLE
CREATE TABLE
CREATE TABLE
CREATE TABLE
CREATE TABLE
INSERT 0 10000
INSERT 0 100
INSERT 0 1000000
INSERT 0 1000000
COMMIT
ANALYZE
ANALYZE
ANALYZE
ANALYZE
CREATE EXTENSION
> Benchmark before CLUSTER
INFO: Run 1, Statement 1: 00:00:00.542427
INFO: Run 1, Statement 2: 00:00:00.53563
INFO:
INFO: Run 2, Statement 1: 00:00:00.538393
INFO: Run 2, Statement 2: 00:00:00.533696
INFO:
INFO: Run 3, Statement 1: 00:00:00.538329
INFO: Run 3, Statement 2: 00:00:00.533263
INFO:
INFO: Run 4, Statement 1: 00:00:00.538051
INFO: Run 4, Statement 2: 00:00:00.533743
INFO:
INFO: Run 5, Statement 1: 00:00:00.537748
INFO: Run 5, Statement 2: 00:00:00.533501
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..192.98 rows=100 width=4) (actual time=0.073..0.137 rows=100 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=4) (actual time=0.030..0.031 rows=1 loops=1)
Index Cond: (id = 4)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..183.43 rows=100 width=12) (actual time=0.039..0.084 rows=100 loops=1)
Index Cond: (parent_1_id = 4)
Planning Time: 0.496 ms
Execution Time: 0.205 ms
(8 rows)
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..192.98 rows=100 width=4) (actual time=0.053..0.096 rows=100 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=4) (actual time=0.024..0.025 rows=1 loops=1)
Index Cond: (id = 4)
Heap Fetches: 1
-> Index Scan using child_natural_pkey on child_natural c (cost=0.42..183.43 rows=100 width=12) (actual time=0.024..0.047 rows=100 loops=1)
Index Cond: (parent_1_id = 4)
Planning Time: 0.511 ms
Execution Time: 0.165 ms
(8 rows)
CLUSTER
ANALYZE
> Benchmark after CLUSTER on surrogate key
INFO: Run 1, Statement 1: 00:00:00.537628
INFO: Run 1, Statement 2: 00:00:00.536158
INFO:
INFO: Run 2, Statement 1: 00:00:00.535762
INFO: Run 2, Statement 2: 00:00:00.53523
INFO:
INFO: Run 3, Statement 1: 00:00:00.536298
INFO: Run 3, Statement 2: 00:00:00.539874
INFO:
INFO: Run 4, Statement 1: 00:00:00.538574
INFO: Run 4, Statement 2: 00:00:00.538613
INFO:
INFO: Run 5, Statement 1: 00:00:00.539386
INFO: Run 5, Statement 2: 00:00:00.538525
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..192.98 rows=100 width=4) (actual time=0.055..0.096 rows=100 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=4) (actual time=0.017..0.018 rows=1 loops=1)
Index Cond: (id = 4)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..183.43 rows=100 width=12) (actual time=0.033..0.062 rows=100 loops=1)
Index Cond: (parent_1_id = 4)
Planning Time: 0.425 ms
Execution Time: 0.140 ms
(8 rows)
CLUSTER
ANALYZE
> Benchmark after CLUSTER on natural key
INFO: Run 1, Statement 1: 00:00:00.539064
INFO: Run 1, Statement 2: 00:00:00.532681
INFO:
INFO: Run 2, Statement 1: 00:00:00.5319
INFO: Run 2, Statement 2: 00:00:00.531002
INFO:
INFO: Run 3, Statement 1: 00:00:00.531616
INFO: Run 3, Statement 2: 00:00:00.531787
INFO:
INFO: Run 4, Statement 1: 00:00:00.531712
INFO: Run 4, Statement 2: 00:00:00.532297
INFO:
INFO: Run 5, Statement 1: 00:00:00.532229
INFO: Run 5, Statement 2: 00:00:00.53321
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..192.98 rows=100 width=4) (actual time=0.064..0.104 rows=100 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=4) (actual time=0.017..0.018 rows=1 loops=1)
Index Cond: (id = 4)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..183.43 rows=100 width=12) (actual time=0.043..0.070 rows=100 loops=1)
Index Cond: (parent_1_id = 4)
Planning Time: 0.397 ms
Execution Time: 0.149 ms
(8 rows)
> Space requirements
objectname | objecttype | entries | size
---------------------------------------------+------------+---------+-------
child_surrogate_pkey | i | 1e+06 | 21 MB
child_surrogate_parent_1_id_parent_2_id_key | i | 1e+06 | 21 MB
child_surrogate | r | 1e+06 | 50 MB
child_natural_pkey | i | 1e+06 | 21 MB
child_natural | r | 1e+06 | 42 MB
(5 rows)
Raw
LICENSE.txt
Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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Raw
mysql-benchmark.sql
-- Copyright Data Geekery GmbH
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
DO $$
DECLARE
v_ts TIMESTAMP;
v_repeat CONSTANT INT := 10000;
rec RECORD;
BEGIN
-- Repeat the whole benchmark several times to avoid warmup penalty
FOR r IN 1..5 LOOP
v_ts := clock_timestamp();
FOR i IN 1..v_repeat LOOP
FOR rec IN (
SELECT c.payload_1 + c.payload_2 AS a FROM parent_1 AS p1 JOIN child_surrogate AS c ON p1.id = c.parent_1_id WHERE p1.id = (SELECT id FROM parent_1 TABLESAMPLE SYSTEM_ROWS(1))
) LOOP
NULL;
END LOOP;
END LOOP;
RAISE INFO 'Run %, Statement 1: %', r, (clock_timestamp() - v_ts);
v_ts := clock_timestamp();
FOR i IN 1..v_repeat LOOP
FOR rec IN (
SELECT c.payload_1 + c.payload_2 AS a FROM parent_1 AS p1 JOIN child_natural AS c ON p1.id = c.parent_1_id WHERE p1.id = (SELECT id FROM parent_1 TABLESAMPLE SYSTEM_ROWS(1))
) LOOP
NULL;
END LOOP;
END LOOP;
RAISE INFO 'Run %, Statement 2: %', r, (clock_timestamp() - v_ts);
RAISE INFO '';
END LOOP;
RAISE INFO '';
RAISE INFO 'Copyright Data Geekery GmbH';
RAISE INFO 'https://www.jooq.org/benchmark';
END$$;
Raw
mysql-setup.sql
BEGIN TRANSACTION;
drop table if exists parent_1;
drop table if exists parent_2;
drop table if exists child_surrogate;
drop table if exists child_natural;
create table parent_1 (id varchar not null primary key);
create table parent_2 (id varchar not null primary key);
create table child_surrogate (
id serial,
parent_1_id varchar not null references parent_1,
parent_2_id varchar not null references parent_2,
payload_1 int,
payload_2 int,
primary key (id),
unique (parent_1_id, parent_2_id)
) -- ENGINE = MyISAM
;
create table child_natural (
parent_1_id varchar not null references parent_1,
parent_2_id varchar not null references parent_2,
payload_1 int,
payload_2 int,
primary key (parent_1_id, parent_2_id)
) -- ENGINE = MyISAM
;
insert into parent_1 (id)
with recursive t as (
select 1000000000 v
union all
select v + 1 from t where v < (1000000000 + 10000)
)
select v
from t;
insert into parent_2 (id)
with recursive t as (
select 1000000000 v
union all
select v + 1 from t where v < (1000000000 + 100)
)
select '' || v
from t;
insert into child_surrogate (parent_1_id, parent_2_id, payload_1, payload_2)
select p1.id, p2.id, 1, 1
from parent_1 as p1, parent_2 as p2;
insert into child_natural (parent_1_id, parent_2_id, payload_1, payload_2)
select p1.id, p2.id, 1, 1
from parent_1 as p1, parent_2 as p2;
COMMIT;
analyze parent_1;
analyze parent_2;
analyze child_surrogate;
analyze child_natural;
create extension tsm_system_rows;
Raw
pg.bash
#!/bin/bash
set -o errexit
pg()
{
docker exec -i pgtest psql -U postgres "$@"
}
recreate_pg_container()
{
docker rm -f pgtest 2>/dev/null || true
docker run -d --name pgtest postgres:11 >/dev/null 2>&1
while ! pg -c 'SELECT 1' >/dev/null 2>&1; do printf . && sleep 1; done
printf '\n'
}
main()
{
recreate_pg_container
pg < mysql-setup.sql
printf '> Benchmark before CLUSTER\n'
pg < mysql-benchmark.sql
pg -c "EXPLAIN ANALYZE SELECT c.payload_1 + c.payload_2 AS a FROM parent_1 AS p1 JOIN child_surrogate AS c ON p1.id = c.parent_1_id WHERE p1.id = '1000000004'"
pg -c "EXPLAIN ANALYZE SELECT c.payload_1 + c.payload_2 AS a FROM parent_1 AS p1 JOIN child_natural AS c ON p1.id = c.parent_1_id WHERE p1.id = '1000000004'"
pg -c 'CLUSTER child_surrogate USING child_surrogate_pkey'
pg -c 'ANALYZE child_surrogate'
printf '> Benchmark after CLUSTER on surrogate key\n'
pg < mysql-benchmark.sql
pg -c "EXPLAIN ANALYZE SELECT c.payload_1 + c.payload_2 AS a FROM parent_1 AS p1 JOIN child_surrogate AS c ON p1.id = c.parent_1_id WHERE p1.id = '1000000004'"
pg -c 'CLUSTER child_surrogate USING child_surrogate_parent_1_id_parent_2_id_key'
pg -c 'ANALYZE child_surrogate'
printf '> Benchmark after CLUSTER on natural key\n'
pg < mysql-benchmark.sql
pg -c "EXPLAIN ANALYZE SELECT c.payload_1 + c.payload_2 AS a FROM parent_1 AS p1 JOIN child_surrogate AS c ON p1.id = c.parent_1_id WHERE p1.id = '1000000004'"
# https://wiki-bsse.ethz.ch/display/ITDOC/Check+size+of+tables+and+objects+in+PostgreSQL+database
printf '> Space requirements\n'
pg -c "SELECT
relname AS objectname,
relkind AS objecttype,
reltuples AS entries, pg_size_pretty(relpages::bigint*8*1024) AS size
FROM pg_class
WHERE relpages >= 8 AND relname LIKE 'child_%'
ORDER BY relname DESC"
}
main
Raw
varchar-1.log
pgtest
...
BEGIN
DROP TABLE
NOTICE: table "parent_1" does not exist, skipping
DROP TABLE
NOTICE: table "parent_2" does not exist, skipping
NOTICE: table "child_surrogate" does not exist, skipping
DROP TABLE
NOTICE: table "child_natural" does not exist, skipping
DROP TABLE
CREATE TABLE
CREATE TABLE
CREATE TABLE
CREATE TABLE
INSERT 0 10000
INSERT 0 100
INSERT 0 1000000
INSERT 0 1000000
COMMIT
ANALYZE
ANALYZE
ANALYZE
ANALYZE
CREATE EXTENSION
> Benchmark before CLUSTER
INFO: Run 1, Statement 1: 00:00:00.654799
INFO: Run 1, Statement 2: 00:00:00.639652
INFO:
INFO: Run 2, Statement 1: 00:00:00.648762
INFO: Run 2, Statement 2: 00:00:00.640546
INFO:
INFO: Run 3, Statement 1: 00:00:00.649607
INFO: Run 3, Statement 2: 00:00:00.641307
INFO:
INFO: Run 4, Statement 1: 00:00:00.650854
INFO: Run 4, Statement 2: 00:00:00.62841
INFO:
INFO: Run 5, Statement 1: 00:00:00.63609
INFO: Run 5, Statement 2: 00:00:00.625045
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..268.50 rows=100 width=4) (actual time=0.094..0.158 rows=100 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=4) (actual time=0.029..0.030 rows=1 loops=1)
Index Cond: (id = '4'::text)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..258.94 rows=100 width=12) (actual time=0.060..0.105 rows=100 loops=1)
Index Cond: ((parent_1_id)::text = '4'::text)
Planning Time: 0.543 ms
Execution Time: 0.221 ms
(8 rows)
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..264.08 rows=100 width=4) (actual time=0.068..0.108 rows=100 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=4) (actual time=0.028..0.028 rows=1 loops=1)
Index Cond: (id = '4'::text)
Heap Fetches: 1
-> Index Scan using child_natural_pkey on child_natural c (cost=0.42..254.53 rows=100 width=12) (actual time=0.036..0.059 rows=100 loops=1)
Index Cond: ((parent_1_id)::text = '4'::text)
Planning Time: 0.489 ms
Execution Time: 0.165 ms
(8 rows)
CLUSTER
ANALYZE
> Benchmark after CLUSTER on surrogate key
INFO: Run 1, Statement 1: 00:00:00.640201
INFO: Run 1, Statement 2: 00:00:00.634613
INFO:
INFO: Run 2, Statement 1: 00:00:00.640532
INFO: Run 2, Statement 2: 00:00:00.637953
INFO:
INFO: Run 3, Statement 1: 00:00:00.639498
INFO: Run 3, Statement 2: 00:00:00.637909
INFO:
INFO: Run 4, Statement 1: 00:00:00.63956
INFO: Run 4, Statement 2: 00:00:00.633978
INFO:
INFO: Run 5, Statement 1: 00:00:00.624921
INFO: Run 5, Statement 2: 00:00:00.628745
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..265.85 rows=100 width=4) (actual time=0.089..0.144 rows=100 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=4) (actual time=0.031..0.031 rows=1 loops=1)
Index Cond: (id = '4'::text)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..256.30 rows=100 width=12) (actual time=0.054..0.089 rows=100 loops=1)
Index Cond: ((parent_1_id)::text = '4'::text)
Planning Time: 0.613 ms
Execution Time: 0.212 ms
(8 rows)
CLUSTER
ANALYZE
> Benchmark after CLUSTER on natural key
INFO: Run 1, Statement 1: 00:00:00.625631
INFO: Run 1, Statement 2: 00:00:00.626623
INFO:
INFO: Run 2, Statement 1: 00:00:00.60795
INFO: Run 2, Statement 2: 00:00:00.621584
INFO:
INFO: Run 3, Statement 1: 00:00:00.608345
INFO: Run 3, Statement 2: 00:00:00.621684
INFO:
INFO: Run 4, Statement 1: 00:00:00.608526
INFO: Run 4, Statement 2: 00:00:00.633827
INFO:
INFO: Run 5, Statement 1: 00:00:00.622683
INFO: Run 5, Statement 2: 00:00:00.637831
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..192.98 rows=100 width=4) (actual time=0.084..0.127 rows=100 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=4) (actual time=0.028..0.029 rows=1 loops=1)
Index Cond: (id = '4'::text)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..183.43 rows=100 width=12) (actual time=0.051..0.076 rows=100 loops=1)
Index Cond: ((parent_1_id)::text = '4'::text)
Planning Time: 0.609 ms
Execution Time: 0.188 ms
(8 rows)
> Space requirements
objectname | objecttype | entries | size
---------------------------------------------+------------+---------+-------
child_surrogate_pkey | i | 1e+06 | 21 MB
child_surrogate_parent_1_id_parent_2_id_key | i | 1e+06 | 22 MB
child_surrogate | r | 1e+06 | 50 MB
child_natural_pkey | i | 1e+06 | 39 MB
child_natural | r | 1e+06 | 42 MB
(5 rows)
Raw
varchar-10.log
pgtest
...
BEGIN
DROP TABLE
NOTICE: table "parent_1" does not exist, skipping
DROP TABLE
NOTICE: table "parent_2" does not exist, skipping
NOTICE: table "child_surrogate" does not exist, skipping
DROP TABLE
NOTICE: table "child_natural" does not exist, skipping
DROP TABLE
CREATE TABLE
CREATE TABLE
CREATE TABLE
CREATE TABLE
INSERT 0 10001
INSERT 0 101
INSERT 0 1010101
INSERT 0 1010101
COMMIT
ANALYZE
ANALYZE
ANALYZE
ANALYZE
CREATE EXTENSION
> Benchmark before CLUSTER
INFO: Run 1, Statement 1: 00:00:00.664437
INFO: Run 1, Statement 2: 00:00:00.657545
INFO:
INFO: Run 2, Statement 1: 00:00:00.66128
INFO: Run 2, Statement 2: 00:00:00.65369
INFO:
INFO: Run 3, Statement 1: 00:00:00.661375
INFO: Run 3, Statement 2: 00:00:00.65439
INFO:
INFO: Run 4, Statement 1: 00:00:00.661147
INFO: Run 4, Statement 2: 00:00:00.655771
INFO:
INFO: Run 5, Statement 1: 00:00:00.657891
INFO: Run 5, Statement 2: 00:00:00.655252
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..194.76 rows=101 width=4) (actual time=0.085..0.135 rows=101 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=11) (actual time=0.030..0.030 rows=1 loops=1)
Index Cond: (id = '1000000004'::text)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..185.19 rows=101 width=19) (actual time=0.051..0.087 rows=101 loops=1)
Index Cond: ((parent_1_id)::text = '1000000004'::text)
Planning Time: 0.476 ms
Execution Time: 0.186 ms
(8 rows)
QUERY PLAN
-------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..194.76 rows=101 width=4) (actual time=0.100..0.158 rows=101 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=11) (actual time=0.034..0.035 rows=1 loops=1)
Index Cond: (id = '1000000004'::text)
Heap Fetches: 1
-> Index Scan using child_natural_pkey on child_natural c (cost=0.42..185.19 rows=101 width=19) (actual time=0.060..0.099 rows=101 loops=1)
Index Cond: ((parent_1_id)::text = '1000000004'::text)
Planning Time: 0.607 ms
Execution Time: 0.221 ms
(8 rows)
CLUSTER
ANALYZE
> Benchmark after CLUSTER on surrogate key
INFO: Run 1, Statement 1: 00:00:00.65983
INFO: Run 1, Statement 2: 00:00:00.656176
INFO:
INFO: Run 2, Statement 1: 00:00:00.65419
INFO: Run 2, Statement 2: 00:00:00.653798
INFO:
INFO: Run 3, Statement 1: 00:00:00.654595
INFO: Run 3, Statement 2: 00:00:00.653591
INFO:
INFO: Run 4, Statement 1: 00:00:00.654671
INFO: Run 4, Statement 2: 00:00:00.650243
INFO:
INFO: Run 5, Statement 1: 00:00:00.650813
INFO: Run 5, Statement 2: 00:00:00.65049
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..192.98 rows=100 width=4) (actual time=0.098..0.159 rows=101 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=11) (actual time=0.038..0.038 rows=1 loops=1)
Index Cond: (id = '1000000004'::text)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..183.43 rows=100 width=19) (actual time=0.055..0.100 rows=101 loops=1)
Index Cond: ((parent_1_id)::text = '1000000004'::text)
Planning Time: 0.687 ms
Execution Time: 0.227 ms
(8 rows)
CLUSTER
ANALYZE
> Benchmark after CLUSTER on natural key
INFO: Run 1, Statement 1: 00:00:00.655081
INFO: Run 1, Statement 2: 00:00:00.652315
INFO:
INFO: Run 2, Statement 1: 00:00:00.651649
INFO: Run 2, Statement 2: 00:00:00.650471
INFO:
INFO: Run 3, Statement 1: 00:00:00.653662
INFO: Run 3, Statement 2: 00:00:00.651739
INFO:
INFO: Run 4, Statement 1: 00:00:00.653825
INFO: Run 4, Statement 2: 00:00:00.65326
INFO:
INFO: Run 5, Statement 1: 00:00:00.655352
INFO: Run 5, Statement 2: 00:00:00.655131
INFO:
INFO:
INFO: Copyright Data Geekery GmbH
INFO: https://www.jooq.org/benchmark
DO
QUERY PLAN
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Nested Loop (cost=0.71..194.76 rows=101 width=4) (actual time=0.068..0.116 rows=101 loops=1)
-> Index Only Scan using parent_1_pkey on parent_1 p1 (cost=0.29..8.30 rows=1 width=11) (actual time=0.027..0.028 rows=1 loops=1)
Index Cond: (id = '1000000004'::text)
Heap Fetches: 1
-> Index Scan using child_surrogate_parent_1_id_parent_2_id_key on child_surrogate c (cost=0.42..185.19 rows=101 width=19) (actual time=0.036..0.068 rows=101 loops=1)
Index Cond: ((parent_1_id)::text = '1000000004'::text)
Planning Time: 0.511 ms
Execution Time: 0.167 ms
(8 rows)
> Space requirements
objectname | objecttype | entries | size
---------------------------------------------+------------+------------+-------
child_surrogate_pkey | i | 1.0101e+06 | 22 MB
child_surrogate_parent_1_id_parent_2_id_key | i | 1.0101e+06 | 39 MB
child_surrogate | r | 1.0101e+06 | 66 MB
child_natural_pkey | i | 1.0101e+06 | 39 MB
child_natural | r | 1.0101e+06 | 58 MB
(5 rows)
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