explain.depesz.com

PostgreSQL's explain analyze made readable

Result: 6XIB

Settings
# exclusive inclusive rows x rows loops node
1. 3.527 51.923 ↑ 1.4 1,877 1

Hash Join (cost=9,460.90..29,895.36 rows=2,613 width=201) (actual time=27.009..51.923 rows=1,877 loops=1)

  • Hash Cond: (COALESCE(tagtrackingmessagesindexed.ttmi_nl_fixed_id, checkpointmessages.cm_nl_entry_id, trackingmessagesindexed.tmi_nl_fixed_id) = nlf.nl_id)
2. 1.612 41.953 ↑ 1.1 2,280 1

Nested Loop Left Join (cost=9,157.93..29,552.87 rows=2,613 width=132) (actual time=20.535..41.953 rows=2,280 loops=1)

3. 0.019 40.341 ↑ 1.1 2,280 1

Nested Loop Left Join (cost=9,157.64..27,392.85 rows=2,613 width=120) (actual time=20.533..40.341 rows=2,280 loops=1)

4. 0.554 33.482 ↑ 1.1 2,280 1

Nested Loop Left Join (cost=9,157.35..20,036.24 rows=2,613 width=116) (actual time=20.519..33.482 rows=2,280 loops=1)

5. 7.990 21.528 ↑ 1.1 2,280 1

HashAggregate (cost=9,156.92..9,183.05 rows=2,613 width=104) (actual time=20.493..21.528 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
6. 2.081 13.538 ↑ 1.1 2,280 1

Append (cost=229.42..9,124.26 rows=2,613 width=104) (actual time=1.477..13.538 rows=2,280 loops=1)

7. 0.005 7.272 ↑ 119.3 16 1

Result (cost=229.42..8,776.88 rows=1,909 width=40) (actual time=1.476..7.272 rows=16 loops=1)

  • One-Time Filter: $0
8.          

Initplan (for Result)

9. 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
10. 0.024 7.255 ↑ 119.3 16 1

Nested Loop (cost=227.96..8,775.41 rows=1,909 width=40) (actual time=1.463..7.255 rows=16 loops=1)

11. 2.553 7.139 ↑ 83.0 23 1

Hash Join (cost=223.61..433.08 rows=1,909 width=36) (actual time=1.446..7.139 rows=23 loops=1)

  • Hash Cond: (entities.e_id = nodeslogical.nl_e_id)
12. 3.173 3.173 ↑ 1.0 6,155 1

Seq Scan on entities (cost=0.00..167.30 rows=6,155 width=7) (actual time=0.020..3.173 rows=6,155 loops=1)

  • Filter: (e_et_code = 'TAG'::text)
  • Rows Removed by Filter: 3,149
13. 0.547 1.413 ↑ 1.0 2,885 1

Hash (cost=187.55..187.55 rows=2,885 width=37) (actual time=1.413..1.413 rows=2,885 loops=1)

  • Buckets: 4,096 Batches: 1 Memory Usage: 180kB
14. 0.866 0.866 ↑ 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=0.013..0.866 rows=2,885 loops=1)

15. 0.000 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)

16. 0.046 0.092 ↑ 9.0 1 23

Sort (cost=4.35..4.37 rows=9 width=8) (actual time=0.004..0.004 rows=1 loops=23)

  • Sort Key: tagdeviceshistory.tdh_date_start DESC
  • Sort Method: top-N heapsort Memory: 25kB
17. 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
18. 0.412 4.185 ↓ 3.2 2,264 1

Hash Anti Join (cost=102.70..308.19 rows=704 width=40) (actual time=0.844..4.185 rows=2,264 loops=1)

  • Hash Cond: (nodeslogical_1.nl_id = tagdeviceshistory_1.tdh_nl_lamp_id)
  • Join Filter: ($2 AND (entities_1.e_et_code = 'PSD'::text))
19.          

Initplan (for Hash Anti Join)

20. 0.012 0.012 ↑ 1.0 1 1

Seq Scan on serveradmin serveradmin_1 (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
21. 2.218 3.729 ↓ 3.2 2,268 1

Hash Join (cost=96.97..291.82 rows=704 width=36) (actual time=0.806..3.729 rows=2,268 loops=1)

  • Hash Cond: (nodeslogical_1.nl_e_id = entities_1.e_id)
22. 0.727 0.727 ↑ 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=0.010..0.727 rows=2,885 loops=1)

23. 0.334 0.784 ↑ 1.0 2,271 1

Hash (cost=68.31..68.31 rows=2,271 width=7) (actual time=0.784..0.784 rows=2,271 loops=1)

  • Buckets: 4,096 Batches: 1 Memory Usage: 122kB
24. 0.450 0.450 ↑ 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=0.028..0.450 rows=2,271 loops=1)

  • Index Cond: (e_et_code = ANY ('{PSD,VMTR}'::text[]))
  • Heap Fetches: 0
25. 0.002 0.032 ↑ 1.0 4 1

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

  • Buckets: 1,024 Batches: 1 Memory Usage: 9kB
26. 0.030 0.030 ↑ 1.0 4 1

Seq Scan on tagdeviceshistory tagdeviceshistory_1 (cost=0.00..4.21 rows=4 width=4) (actual time=0.017..0.030 rows=4 loops=1)

  • Filter: (tdh_date_end IS NULL)
  • Rows Removed by Filter: 217
27. 0.000 11.400 ↑ 1.0 1 2,280

Limit (cost=0.42..4.12 rows=1 width=12) (actual time=0.005..0.005 rows=1 loops=2,280)

28. 2.344 11.400 ↑ 832.0 1 2,280

Result (cost=0.42..3,077.61 rows=832 width=12) (actual time=0.004..0.005 rows=1 loops=2,280)

  • One-Time Filter: (entities.e_et_code = ANY ('{PSD,VMTR}'::text[]))
29. 9.056 9.056 ↑ 832.0 1 2,264

Index Scan using tmi_indextrackingmobile on trackingmessagesindexed (cost=0.42..3,077.61 rows=832 width=12) (actual time=0.004..0.004 rows=1 loops=2,264)

  • Index Cond: (tmi_nl_mobile_id = tagdeviceshistory.tdh_nl_lamp_id)
30. 2.280 6.840 ↓ 0.0 0 2,280

Limit (cost=0.29..2.80 rows=1 width=8) (actual time=0.003..0.003 rows=0 loops=2,280)

31. 0.246 4.560 ↓ 0.0 0 2,280

Result (cost=0.29..77.88 rows=31 width=8) (actual time=0.002..0.002 rows=0 loops=2,280)

  • One-Time Filter: (entities.e_et_code = 'PSD'::text)
32. 4.314 4.314 ↓ 0.0 0 2,157

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=2,157)

  • Index Cond: ((cm_nl_mobile_id = tagdeviceshistory.tdh_nl_lamp_id) AND (cm_date >= COALESCE(trackingmessagesindexed.tmi_disconnect, 0)))
33. 0.000 0.000 ↓ 0.0 0 2,280

Limit (cost=0.29..0.81 rows=1 width=12) (actual time=0.000..0.000 rows=0 loops=2,280)

34. 0.000 0.000 ↓ 0.0 0 2,280

Result (cost=0.29..274.15 rows=525 width=12) (actual time=0.000..0.000 rows=0 loops=2,280)

  • One-Time Filter: (entities.e_et_code = 'TAG'::text)
35. 0.128 0.128 ↑ 525.0 1 16

Index Scan Backward using tagtrackingmessagesindexed_pkey on tagtrackingmessagesindexed (cost=0.29..274.15 rows=525 width=12) (actual time=0.008..0.008 rows=1 loops=16)

  • Index Cond: ((ttmi_nl_personnel_id = nodeslogical.nl_id) AND (ttmi_te_code = 'TRACKING'::text))
36. 2.162 6.443 ↑ 1.0 9,021 1

Hash (cost=190.21..190.21 rows=9,021 width=53) (actual time=6.443..6.443 rows=9,021 loops=1)

  • Buckets: 16,384 Batches: 1 Memory Usage: 570kB
37. 4.281 4.281 ↑ 1.0 9,021 1

Seq Scan on nodeslogical nlf (cost=0.00..190.21 rows=9,021 width=53) (actual time=0.012..4.281 rows=9,021 loops=1)