explain.depesz.com

PostgreSQL's explain analyze made readable

Result: 1G3C

Settings
# exclusive inclusive rows x rows loops node
1. 1.025 30.660 ↓ 9.3 1,864 1

Hash Join (cost=9,847.21..10,689.05 rows=200 width=201) (actual time=13.490..30.660 rows=1,864 loops=1)

  • Hash Cond: (COALESCE(tagtrackingmessagesindexed.ttmi_nl_fixed_id, checkpointmessages.cm_nl_entry_id, trackingmessagesindexed.tmi_nl_fixed_id) = nlf.nl_id)
2. 1.505 25.722 ↓ 11.3 2,267 1

Nested Loop Left Join (cost=9,544.24..10,383.05 rows=200 width=132) (actual time=9.555..25.722 rows=2,267 loops=1)

3. 0.906 24.217 ↓ 11.3 2,267 1

Nested Loop Left Join (cost=9,543.95..10,217.72 rows=200 width=120) (actual time=9.552..24.217 rows=2,267 loops=1)

4. 1.756 18.777 ↓ 11.3 2,267 1

Nested Loop Left Join (cost=9,543.66..9,654.64 rows=200 width=116) (actual time=9.544..18.777 rows=2,267 loops=1)

5. 0.434 10.220 ↓ 11.3 2,267 1

Unique (cost=9,543.23..9,556.30 rows=200 width=104) (actual time=9.530..10.220 rows=2,267 loops=1)

6. 0.927 9.786 ↑ 1.1 2,280 1

Sort (cost=9,543.23..9,549.77 rows=2,613 width=104) (actual time=9.529..9.786 rows=2,280 loops=1)

  • Sort Key: o.mobile_device_id
  • Sort Method: quicksort Memory: 275kB
7. 0.330 8.859 ↑ 1.1 2,280 1

Subquery Scan on o (cost=9,362.26..9,394.93 rows=2,613 width=104) (actual time=8.401..8.859 rows=2,280 loops=1)

8. 0.539 8.529 ↑ 1.1 2,280 1

Sort (cost=9,362.26..9,368.80 rows=2,613 width=108) (actual time=8.400..8.529 rows=2,280 loops=1)

  • Sort Key: (CASE WHEN (u.e_et_code = 'TAG'::text) THEN 1 ELSE NULL::integer END)
  • Sort Method: quicksort Memory: 275kB
9. 0.324 7.990 ↑ 1.1 2,280 1

Subquery Scan on u (cost=9,155.16..9,213.96 rows=2,613 width=108) (actual time=7.202..7.990 rows=2,280 loops=1)

10. 1.269 7.666 ↑ 1.1 2,280 1

HashAggregate (cost=9,155.16..9,181.29 rows=2,613 width=104) (actual time=7.201..7.666 rows=2,280 loops=1)

  • Group Key: nodeslogical.nl_id, tagdeviceshistory.tdh_nl_lamp_id, nodeslogical.nl_label, nodeslogical.nl_details, entities.e_et_code
11. 0.178 6.397 ↑ 1.1 2,280 1

Append (cost=229.42..9,122.50 rows=2,613 width=104) (actual time=1.504..6.397 rows=2,280 loops=1)

12. 0.004 3.498 ↑ 119.3 16 1

Result (cost=229.42..8,776.88 rows=1,909 width=40) (actual time=1.504..3.498 rows=16 loops=1)

  • One-Time Filter: $0
13.          

Initplan (for Result)

14. 0.012 0.012 ↑ 1.0 1 1

Seq Scan on serveradmin (cost=0.00..1.46 rows=1 width=0) (actual time=0.012..0.012 rows=1 loops=1)

  • Filter: (((sa_key)::text = 'enableRFID'::text) AND ((sa_value)::text = '1'::text))
  • Rows Removed by Filter: 20
15. 0.011 3.482 ↑ 119.3 16 1

Nested Loop (cost=227.96..8,775.41 rows=1,909 width=40) (actual time=1.490..3.482 rows=16 loops=1)

16. 0.662 3.379 ↑ 83.0 23 1

Hash Join (cost=223.61..433.08 rows=1,909 width=36) (actual time=1.475..3.379 rows=23 loops=1)

  • Hash Cond: (entities.e_id = nodeslogical.nl_e_id)
17. 1.274 1.274 ↑ 1.0 6,155 1

Seq Scan on entities (cost=0.00..167.30 rows=6,155 width=7) (actual time=0.020..1.274 rows=6,155 loops=1)

  • Filter: (e_et_code = 'TAG'::text)
  • Rows Removed by Filter: 3,149
18. 0.582 1.443 ↑ 1.0 2,885 1

Hash (cost=187.55..187.55 rows=2,885 width=37) (actual time=1.442..1.443 rows=2,885 loops=1)

  • Buckets: 4,096 Batches: 1 Memory Usage: 180kB
19. 0.861 0.861 ↑ 1.0 2,885 1

Index Scan using nl_index_isactive on nodeslogical (cost=0.28..187.55 rows=2,885 width=37) (actual time=0.012..0.861 rows=2,885 loops=1)

20. 0.023 0.092 ↑ 1.0 1 23

Limit (cost=4.35..4.35 rows=1 width=8) (actual time=0.004..0.004 rows=1 loops=23)

21. 0.023 0.069 ↑ 9.0 1 23

Sort (cost=4.35..4.37 rows=9 width=8) (actual time=0.003..0.003 rows=1 loops=23)

  • Sort Key: tagdeviceshistory.tdh_date_start DESC
  • Sort Method: top-N heapsort Memory: 25kB
22. 0.046 0.046 ↑ 2.2 4 23

Index Only Scan using tagdeviceshistory_pkey on tagdeviceshistory (cost=0.14..4.30 rows=9 width=8) (actual time=0.001..0.002 rows=4 loops=23)

  • Index Cond: (tdh_nl_personnel_id = nodeslogical.nl_id)
  • Heap Fetches: 0
23. 0.414 2.721 ↓ 3.2 2,264 1

Hash Anti Join (cost=102.70..306.43 rows=704 width=40) (actual time=0.801..2.721 rows=2,264 loops=1)

  • Hash Cond: (nodeslogical_1.nl_id = tagdeviceshistory_1.tdh_nl_lamp_id)
  • Join Filter: $2
24.          

Initplan (for Hash Anti Join)

25. 0.010 0.010 ↑ 1.0 1 1

Seq Scan on serveradmin serveradmin_1 (cost=0.00..1.46 rows=1 width=0) (actual time=0.010..0.010 rows=1 loops=1)

  • Filter: (((sa_key)::text = 'enableRFID'::text) AND ((sa_value)::text = '1'::text))
  • Rows Removed by Filter: 20
26. 0.890 2.265 ↓ 3.2 2,268 1

Hash Join (cost=96.97..291.82 rows=704 width=36) (actual time=0.766..2.265 rows=2,268 loops=1)

  • Hash Cond: (nodeslogical_1.nl_e_id = entities_1.e_id)
27. 0.625 0.625 ↑ 1.0 2,885 1

Index Scan using nl_index_isactive on nodeslogical nodeslogical_1 (cost=0.28..187.55 rows=2,885 width=37) (actual time=0.008..0.625 rows=2,885 loops=1)

28. 0.324 0.750 ↑ 1.0 2,271 1

Hash (cost=68.31..68.31 rows=2,271 width=7) (actual time=0.750..0.750 rows=2,271 loops=1)

  • Buckets: 4,096 Batches: 1 Memory Usage: 122kB
29. 0.426 0.426 ↑ 1.0 2,271 1

Index Only Scan using e_index_et_code on entities entities_1 (cost=0.29..68.31 rows=2,271 width=7) (actual time=0.027..0.426 rows=2,271 loops=1)

  • Index Cond: (e_et_code = ANY ('{PSD,VMTR}'::text[]))
  • Heap Fetches: 0
30. 0.003 0.032 ↑ 1.0 4 1

Hash (cost=4.21..4.21 rows=4 width=4) (actual time=0.031..0.032 rows=4 loops=1)

  • Buckets: 1,024 Batches: 1 Memory Usage: 9kB
31. 0.029 0.029 ↑ 1.0 4 1

Seq Scan on tagdeviceshistory tagdeviceshistory_1 (cost=0.00..4.21 rows=4 width=4) (actual time=0.017..0.029 rows=4 loops=1)

  • Filter: (tdh_date_end IS NULL)
  • Rows Removed by Filter: 217
32. 0.000 6.801 ↑ 1.0 1 2,267

Limit (cost=0.42..0.46 rows=1 width=12) (actual time=0.003..0.003 rows=1 loops=2,267)

33. 6.801 6.801 ↑ 832.0 1 2,267

Index Only Scan using tmi_indextrackingmobile on trackingmessagesindexed (cost=0.42..30.99 rows=832 width=12) (actual time=0.003..0.003 rows=1 loops=2,267)

  • Index Cond: (tmi_nl_mobile_id = o.mobile_device_id)
  • Heap Fetches: 0
34. 0.000 4.534 ↓ 0.0 0 2,267

Limit (cost=0.29..2.80 rows=1 width=8) (actual time=0.002..0.002 rows=0 loops=2,267)

35. 4.534 4.534 ↓ 0.0 0 2,267

Index Scan Backward using checkpointmessages_pkey on checkpointmessages (cost=0.29..77.88 rows=31 width=8) (actual time=0.002..0.002 rows=0 loops=2,267)

  • Index Cond: ((cm_nl_mobile_id = o.mobile_device_id) AND (cm_date >= COALESCE(trackingmessagesindexed.tmi_disconnect, 0)))
36. 0.000 0.000 ↓ 0.0 0 2,267

Limit (cost=0.29..0.81 rows=1 width=12) (actual time=0.000..0.000 rows=0 loops=2,267)

37. 0.000 0.000 ↓ 0.0 0 2,267

Result (cost=0.29..274.15 rows=525 width=12) (actual time=0.000..0.000 rows=0 loops=2,267)

  • One-Time Filter: (o.e_et_code = 'TAG'::text)
38. 0.063 0.063 ↑ 525.0 1 7

Index Scan Backward using tagtrackingmessagesindexed_pkey on tagtrackingmessagesindexed (cost=0.29..274.15 rows=525 width=12) (actual time=0.009..0.009 rows=1 loops=7)

  • Index Cond: ((ttmi_nl_personnel_id = o.mobile_details_id) AND (ttmi_te_code = 'TRACKING'::text))
39. 1.729 3.913 ↑ 1.0 9,021 1

Hash (cost=190.21..190.21 rows=9,021 width=53) (actual time=3.913..3.913 rows=9,021 loops=1)

  • Buckets: 16,384 Batches: 1 Memory Usage: 570kB
40. 2.184 2.184 ↑ 1.0 9,021 1

Seq Scan on nodeslogical nlf (cost=0.00..190.21 rows=9,021 width=53) (actual time=0.012..2.184 rows=9,021 loops=1)