explain.depesz.com

PostgreSQL's explain analyze made readable

Result: pzbk

Settings
# exclusive inclusive rows x rows loops node
1. 0.004 10.547 ↑ 1.0 1 1

Nested Loop (cost=9,544.52..9,575.40 rows=1 width=201) (actual time=9.638..10.547 rows=1 loops=1)

2. 0.001 10.538 ↑ 1.0 1 1

Nested Loop Left Join (cost=9,544.24..9,567.08 rows=1 width=132) (actual time=9.629..10.538 rows=1 loops=1)

3. 0.001 10.536 ↑ 1.0 1 1

Nested Loop Left Join (cost=9,543.95..9,566.26 rows=1 width=120) (actual time=9.627..10.536 rows=1 loops=1)

4. 0.003 10.524 ↑ 1.0 1 1

Nested Loop Left Join (cost=9,543.66..9,563.44 rows=1 width=116) (actual time=9.616..10.524 rows=1 loops=1)

5. 0.347 10.498 ↑ 1.0 1 1

Subquery Scan on d (cost=9,543.23..9,559.30 rows=1 width=104) (actual time=9.591..10.498 rows=1 loops=1)

  • Filter: (((d.nl_label)::text ~~ '%28E0'::text) AND (d.e_et_code = 'PSD'::text))
  • Rows Removed by Filter: 2,266
6. 0.428 10.151 ↓ 11.3 2,267 1

Unique (cost=9,543.23..9,556.30 rows=200 width=104) (actual time=9.573..10.151 rows=2,267 loops=1)

7. 0.829 9.723 ↑ 1.1 2,280 1

Sort (cost=9,543.23..9,549.77 rows=2,613 width=104) (actual time=9.572..9.723 rows=2,280 loops=1)

  • Sort Key: o.mobile_device_id
  • Sort Method: quicksort Memory: 275kB
8. 0.334 8.894 ↑ 1.1 2,280 1

Subquery Scan on o (cost=9,362.26..9,394.93 rows=2,613 width=104) (actual time=8.430..8.894 rows=2,280 loops=1)

9. 0.571 8.560 ↑ 1.1 2,280 1

Sort (cost=9,362.26..9,368.80 rows=2,613 width=108) (actual time=8.429..8.560 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
10. 0.319 7.989 ↑ 1.1 2,280 1

Subquery Scan on u (cost=9,155.16..9,213.96 rows=2,613 width=108) (actual time=7.205..7.989 rows=2,280 loops=1)

11. 1.281 7.670 ↑ 1.1 2,280 1

HashAggregate (cost=9,155.16..9,181.29 rows=2,613 width=104) (actual time=7.204..7.670 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
12. 0.180 6.389 ↑ 1.1 2,280 1

Append (cost=229.42..9,122.50 rows=2,613 width=104) (actual time=1.579..6.389 rows=2,280 loops=1)

13. 0.005 3.545 ↑ 119.3 16 1

Result (cost=229.42..8,776.88 rows=1,909 width=40) (actual time=1.579..3.545 rows=16 loops=1)

  • One-Time Filter: $0
14.          

Initplan (for Result)

15. 0.014 0.014 ↑ 1.0 1 1

Seq Scan on serveradmin (cost=0.00..1.46 rows=1 width=0) (actual time=0.014..0.014 rows=1 loops=1)

  • Filter: (((sa_key)::text = 'enableRFID'::text) AND ((sa_value)::text = '1'::text))
  • Rows Removed by Filter: 20
16. 0.007 3.526 ↑ 119.3 16 1

Nested Loop (cost=227.96..8,775.41 rows=1,909 width=40) (actual time=1.563..3.526 rows=16 loops=1)

17. 0.659 3.427 ↑ 83.0 23 1

Hash Join (cost=223.61..433.08 rows=1,909 width=36) (actual time=1.547..3.427 rows=23 loops=1)

  • Hash Cond: (entities.e_id = nodeslogical.nl_e_id)
18. 1.255 1.255 ↑ 1.0 6,155 1

Seq Scan on entities (cost=0.00..167.30 rows=6,155 width=7) (actual time=0.020..1.255 rows=6,155 loops=1)

  • Filter: (e_et_code = 'TAG'::text)
  • Rows Removed by Filter: 3,149
19. 0.539 1.513 ↑ 1.0 2,885 1

Hash (cost=187.55..187.55 rows=2,885 width=37) (actual time=1.513..1.513 rows=2,885 loops=1)

  • Buckets: 4,096 Batches: 1 Memory Usage: 180kB
20. 0.974 0.974 ↑ 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..0.974 rows=2,885 loops=1)

21. 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)

22. 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
23. 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
24. 0.370 2.664 ↓ 3.2 2,264 1

Hash Anti Join (cost=102.70..306.43 rows=704 width=40) (actual time=0.843..2.664 rows=2,264 loops=1)

  • Hash Cond: (nodeslogical_1.nl_id = tagdeviceshistory_1.tdh_nl_lamp_id)
  • Join Filter: $2
25.          

Initplan (for Hash Anti Join)

26. 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
27. 0.886 2.254 ↓ 3.2 2,268 1

Hash Join (cost=96.97..291.82 rows=704 width=36) (actual time=0.807..2.254 rows=2,268 loops=1)

  • Hash Cond: (nodeslogical_1.nl_e_id = entities_1.e_id)
28. 0.582 0.582 ↑ 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..0.582 rows=2,885 loops=1)

29. 0.346 0.786 ↑ 1.0 2,271 1

Hash (cost=68.31..68.31 rows=2,271 width=7) (actual time=0.786..0.786 rows=2,271 loops=1)

  • Buckets: 4,096 Batches: 1 Memory Usage: 122kB
30. 0.440 0.440 ↑ 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=0.033..0.440 rows=2,271 loops=1)

  • Index Cond: (e_et_code = ANY ('{PSD,VMTR}'::text[]))
  • Heap Fetches: 0
31. 0.002 0.030 ↑ 1.0 4 1

Hash (cost=4.21..4.21 rows=4 width=4) (actual time=0.030..0.030 rows=4 loops=1)

  • Buckets: 1,024 Batches: 1 Memory Usage: 9kB
32. 0.028 0.028 ↑ 1.0 4 1

Seq Scan on tagdeviceshistory tagdeviceshistory_1 (cost=0.00..4.21 rows=4 width=4) (actual time=0.016..0.028 rows=4 loops=1)

  • Filter: (tdh_date_end IS NULL)
  • Rows Removed by Filter: 217
33. 0.001 0.023 ↑ 1.0 1 1

Limit (cost=0.42..4.12 rows=1 width=12) (actual time=0.023..0.023 rows=1 loops=1)

34. 0.002 0.022 ↑ 832.0 1 1

Result (cost=0.42..3,077.61 rows=832 width=12) (actual time=0.022..0.022 rows=1 loops=1)

  • One-Time Filter: (d.e_et_code = ANY ('{PSD,VMTR}'::text[]))
35. 0.020 0.020 ↑ 832.0 1 1

Index Scan using tmi_indextrackingmobile on trackingmessagesindexed (cost=0.42..3,077.61 rows=832 width=12) (actual time=0.020..0.020 rows=1 loops=1)

  • Index Cond: (tmi_nl_mobile_id = d.mobile_device_id)
36. 0.001 0.011 ↑ 1.0 1 1

Limit (cost=0.29..2.80 rows=1 width=8) (actual time=0.010..0.011 rows=1 loops=1)

37. 0.001 0.010 ↑ 31.0 1 1

Result (cost=0.29..77.88 rows=31 width=8) (actual time=0.010..0.010 rows=1 loops=1)

  • One-Time Filter: (d.e_et_code = 'PSD'::text)
38. 0.009 0.009 ↑ 31.0 1 1

Index Scan Backward using checkpointmessages_pkey on checkpointmessages (cost=0.29..77.88 rows=31 width=8) (actual time=0.008..0.009 rows=1 loops=1)

  • Index Cond: ((cm_nl_mobile_id = d.mobile_device_id) AND (cm_date >= COALESCE(trackingmessagesindexed.tmi_disconnect, 0)))
39. 0.001 0.001 ↓ 0.0 0 1

Limit (cost=0.29..0.81 rows=1 width=12) (actual time=0.001..0.001 rows=0 loops=1)

40. 0.000 0.000 ↓ 0.0 0 1

Result (cost=0.29..274.15 rows=525 width=12) (actual time=0.000..0.000 rows=0 loops=1)

  • One-Time Filter: (d.e_et_code = 'TAG'::text)
41. 0.000 0.000 ↓ 0.0 0

Index Scan Backward using tagtrackingmessagesindexed_pkey on tagtrackingmessagesindexed (cost=0.29..274.15 rows=525 width=12) (never executed)

  • Index Cond: ((ttmi_nl_personnel_id = d.mobile_details_id) AND (ttmi_te_code = 'TRACKING'::text))
42. 0.005 0.005 ↑ 1.0 1 1

Index Scan using nodeslogical_pkey on nodeslogical nlf (cost=0.29..8.30 rows=1 width=53) (actual time=0.005..0.005 rows=1 loops=1)

  • Index Cond: (nl_id = COALESCE(tagtrackingmessagesindexed.ttmi_nl_fixed_id, checkpointmessages.cm_nl_entry_id, trackingmessagesindexed.tmi_nl_fixed_id))