explain.depesz.com

PostgreSQL's explain analyze made readable

Result: kNVJu

Settings
# exclusive inclusive rows x rows loops node
1. 11.235 127.563 ↑ 1.0 1 1

Aggregate (cost=22,462.86..22,462.87 rows=1 width=8) (actual time=127.563..127.563 rows=1 loops=1)

2. 13.350 116.328 ↓ 5.8 69,129 1

Gather (cost=1,274.90..22,433.02 rows=11,934 width=4) (actual time=1.505..116.328 rows=69,129 loops=1)

  • Workers Planned: 1
  • Workers Launched: 1
3. 24.106 102.978 ↓ 4.9 34,564 2 / 2

Hash Join (cost=274.90..20,239.62 rows=7,020 width=4) (actual time=1.701..102.978 rows=34,564 loops=2)

  • Hash Cond: (api_currentreport.rule_id = api_rule.id)
4. 24.696 77.340 ↓ 9.3 113,064 2 / 2

Nested Loop (cost=0.86..19,849.87 rows=12,144 width=4) (actual time=0.081..77.340 rows=113,064 loops=2)

5. 4.009 4.009 ↓ 2.2 9,727 2 / 2

Parallel Index Only Scan using api_host_account_system_uuid_stale_warn_at_index on api_host (cost=0.43..1,019.93 rows=4,346 width=16) (actual time=0.047..4.009 rows=9,727 loops=2)

  • Index Cond: ((account = '729650'::text) AND (stale_warn_at > '2020-05-16 16:16:47.586377+00'::timestamp with time zone))
  • Heap Fetches: 0
6. 48.635 48.635 ↑ 1.3 12 19,454 / 2

Index Only Scan using curreport_system_uuid_rule_id on api_currentreport (cost=0.43..4.17 rows=16 width=20) (actual time=0.004..0.005 rows=12 loops=19,454)

  • Index Cond: (system_uuid = api_host.system_uuid)
  • Heap Fetches: 0
7. 0.170 1.532 ↑ 1.1 696 2 / 2

Hash (cost=264.81..264.81 rows=738 width=4) (actual time=1.532..1.532 rows=696 loops=2)

  • Buckets: 1024 Batches: 1 Memory Usage: 33kB
8. 0.297 1.362 ↑ 1.1 696 2 / 2

Hash Anti Join (cost=28.18..264.81 rows=738 width=4) (actual time=0.314..1.362 rows=696 loops=2)

  • Hash Cond: (api_rule.id = api_ack.rule_id)
9. 0.779 0.779 ↑ 1.0 1,018 2 / 2

Seq Scan on api_rule (cost=0.00..215.77 rows=1,018 width=4) (actual time=0.015..0.779 rows=1,018 loops=2)

  • Filter: active
  • Rows Removed by Filter: 259
10. 0.077 0.286 ↑ 1.0 351 2 / 2

Hash (cost=23.79..23.79 rows=351 width=4) (actual time=0.286..0.286 rows=351 loops=2)

  • Buckets: 1024 Batches: 1 Memory Usage: 21kB
11. 0.209 0.209 ↑ 1.0 351 2 / 2

Seq Scan on api_ack (cost=0.00..23.79 rows=351 width=4) (actual time=0.009..0.209 rows=351 loops=2)

  • Filter: ((account)::text = '729650'::text)
  • Rows Removed by Filter: 752
Planning time : 0.842 ms
Execution time : 128.079 ms