explain.depesz.com

PostgreSQL's explain analyze made readable

Result: qUXb : Optimization for: Optimization for: Optimization for: Optimization for: Optimization for: Optimization for: plan #gWgH; plan #lj5Ms; plan #B8eq; plan #Yty9; plan #Lheu; plan #27c

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Optimization path:

Optimization(s) for this plan:

# exclusive inclusive rows x rows loops node
1. 0.014 41.219 ↑ 1.5 169 1

Limit (cost=17,536.53..17,554.03 rows=250 width=554) (actual time=41.055..41.219 rows=169 loops=1)

2. 0.126 41.205 ↑ 18.9 169 1

Unique (cost=17,536.53..17,760.32 rows=3,197 width=554) (actual time=41.054..41.205 rows=169 loops=1)

3. 0.193 41.079 ↑ 18.9 169 1

Sort (cost=17,536.53..17,544.52 rows=3,197 width=554) (actual time=41.053..41.079 rows=169 loops=1)

  • Sort Key: lima_delta1.mike_seven, lima_delta1.november_seven, lima_delta1.quebec_seven, lima_delta1.juliet_delta, lima_delta1.oscar_four, lima_delta1.foxtrot_bravo, lima_delta1.golf_echo, lima_delta1.zulu_alpha, lima_delta1.november_romeo, romeo_three1.three, romeo_three1.six_xray, kilo_foxtrot1.quebec_seven, kilo_foxtrot1.juliet_delta, kilo_foxtrot1.three, kilo_foxtrot2.quebec_seven, kilo_foxtrot2.juliet_delta, kilo_foxtrot2.three, alpha_seven1.three, alpha_seven1.yankee_tango, uniform_delta1.quebec_seven, uniform_delta1.juliet_delta, uniform_delta1.three, papa_kilo1.whiskey_zulu, echo_seven1.victor_five, ((zulu_uniform1.oscar_sierra five_romeo NOT NULL)), (six_uniform(0, alpha_oscar1.six_uniform, lima_delta1.foxtrot_bravo, LOCALTIMESTAMP, lima_delta1.mike_seven)), ((six_uniform(1, alpha_oscar1.six_uniform, lima_delta1.foxtrot_bravo, LOCALTIMESTAMP, lima_delta1.mike_seven))::boolean)
  • Sort Method: quicksort Memory: 149kB
4. 3.338 40.886 ↑ 18.9 169 1

Hash Left Join (cost=2,339.12..17,350.42 rows=3,197 width=554) (actual time=10.269..40.886 rows=169 loops=1)

  • Hash Cond: (echo_seven1.delta_kilo = alpha_seven1.quebec_seven)
5. 0.074 37.011 ↑ 18.9 169 1

Hash Left Join (cost=2,064.61..15,437.03 rows=3,197 width=1,134) (actual time=9.618..37.011 rows=169 loops=1)

  • Hash Cond: (echo_seven1.four_delta = kilo_foxtrot2.quebec_seven)
6. 0.078 36.477 ↑ 18.9 169 1

Nested Loop Left Join (cost=1,859.31..15,223.30 rows=3,197 width=1,073) (actual time=9.151..36.477 rows=169 loops=1)

7. 0.085 35.723 ↑ 18.7 169 1

Hash Left Join (cost=1,858.88..9,020.70 rows=3,164 width=1,049) (actual time=9.136..35.723 rows=169 loops=1)

  • Hash Cond: (lima_delta1.quebec_seven = zulu_uniform1.sierra_foxtrot)
8. 0.108 34.031 ↑ 18.7 169 1

Hash Left Join (cost=1,366.94..8,512.93 rows=3,164 width=382) (actual time=7.519..34.031 rows=169 loops=1)

  • Hash Cond: ((kilo_foxtrot1.quebec_seven = alpha_oscar1.uniform_bravo) AND (lima_delta1.juliet_hotel = alpha_oscar1.foxtrot_charlie))
9. 0.096 32.014 ↑ 18.7 169 1

Hash Left Join (cost=1,031.57..8,160.94 rows=3,164 width=354) (actual time=5.593..32.014 rows=169 loops=1)

  • Hash Cond: (lima_delta1.lima_echo = kilo_foxtrot1.quebec_seven)
10. 0.096 29.619 ↑ 18.7 169 1

Hash Left Join (cost=424.00..7,545.05 rows=3,164 width=295) (actual time=3.278..29.619 rows=169 loops=1)

  • Hash Cond: (lima_delta1.two = papa_kilo1.quebec_seven)
11. 0.067 26.618 ↑ 18.7 169 1

Hash Left Join (cost=80.87..7,193.62 rows=3,164 width=284) (actual time=0.360..26.618 rows=169 loops=1)

  • Hash Cond: (lima_delta1.four_sierra = romeo_three1.quebec_seven)
12. 0.072 26.538 ↑ 18.7 169 1

Hash Left Join (cost=79.58..7,181.32 rows=3,164 width=275) (actual time=0.342..26.538 rows=169 loops=1)

  • Hash Cond: (lima_delta1.juliet_hotel = uniform_delta1.quebec_seven)
13. 1.919 26.168 ↑ 18.7 169 1

Hash Left Join (cost=1.65..7,094.99 rows=3,164 width=179) (actual time=0.039..26.168 rows=169 loops=1)

  • Hash Cond: (lima_delta1.juliet_hotel = india1.quebec_hotel)
  • Filter: (((lima_delta1.juliet_hotel = 81) OR (india1.yankee_zulu = 81)) AND ((lima_delta1.juliet_hotel = 81) OR (india1.yankee_zulu = 81)))
  • Rows Removed by Filter: 17,621
14. 24.238 24.238 ↑ 1.7 17,790 1

Index Scan using papa_yankee on foxtrot_romeo quebec_sierra (cost=0.56..6,975.07 rows=29,909 width=179) (actual time=0.023..24.238 rows=17,790 loops=1)

  • Index Cond: ((lima_romeo)::text = 'quebec_quebec'::text)
  • Filter: ((NOT papa_bravo) OR (papa_bravo five_romeo NULL))
  • Rows Removed by Filter: 9,402
15. 0.002 0.011 ↑ 1.0 3 1

Hash (cost=1.05..1.05 rows=3 width=16) (actual time=0.011..0.011 rows=3 loops=1)

  • Buckets: 1,024 Batches: 1 Memory Usage: 9kB
16. 0.009 0.009 ↑ 1.0 3 1

Seq Scan on hotel_three romeo_foxtrot (cost=0.00..1.05 rows=3 width=16) (actual time=0.007..0.009 rows=3 loops=1)

  • Filter: ((juliet_charlie)::text = 'kilo_papa'::text)
  • Rows Removed by Filter: 1
17. 0.088 0.298 ↑ 1.0 397 1

Hash (cost=72.97..72.97 rows=397 width=96) (actual time=0.298..0.298 rows=397 loops=1)

  • Buckets: 1,024 Batches: 1 Memory Usage: 58kB
18. 0.210 0.210 ↑ 1.0 397 1

Seq Scan on echo_zulu mike_quebec (cost=0.00..72.97 rows=397 width=96) (actual time=0.004..0.210 rows=397 loops=1)

19. 0.005 0.013 ↑ 1.0 13 1

Hash (cost=1.13..1.13 rows=13 width=25) (actual time=0.013..0.013 rows=13 loops=1)

  • Buckets: 1,024 Batches: 1 Memory Usage: 9kB
20. 0.008 0.008 ↑ 1.0 13 1

Seq Scan on tango four_uniform (cost=0.00..1.13 rows=13 width=25) (actual time=0.005..0.008 rows=13 loops=1)

21. 1.260 2.905 ↓ 1.0 8,167 1

Hash (cost=241.39..241.39 rows=8,139 width=27) (actual time=2.905..2.905 rows=8,167 loops=1)

  • Buckets: 8,192 Batches: 1 Memory Usage: 569kB
22. 1.645 1.645 ↓ 1.0 8,167 1

Seq Scan on golf_five uniform_romeo (cost=0.00..241.39 rows=8,139 width=27) (actual time=0.005..1.645 rows=8,167 loops=1)

23. 0.738 2.299 ↑ 1.0 5,181 1

Hash (cost=542.81..542.81 rows=5,181 width=67) (actual time=2.298..2.299 rows=5,181 loops=1)

  • Buckets: 8,192 Batches: 1 Memory Usage: 569kB
24. 1.561 1.561 ↑ 1.0 5,181 1

Seq Scan on sierra_three whiskey_six (cost=0.00..542.81 rows=5,181 width=67) (actual time=0.006..1.561 rows=5,181 loops=1)

25. 0.730 1.909 ↓ 1.0 5,539 1

Hash (cost=252.95..252.95 rows=5,495 width=52) (actual time=1.908..1.909 rows=5,539 loops=1)

  • Buckets: 8,192 Batches: 1 Memory Usage: 501kB
26. 1.179 1.179 ↓ 1.0 5,539 1

Seq Scan on delta_alpha five_xray (cost=0.00..252.95 rows=5,495 width=52) (actual time=0.008..1.179 rows=5,539 loops=1)

27. 0.614 1.607 ↑ 1.0 2,541 1

Hash (cost=459.75..459.75 rows=2,575 width=675) (actual time=1.606..1.607 rows=2,541 loops=1)

  • Buckets: 4,096 Batches: 1 Memory Usage: 1,354kB
28. 0.993 0.993 ↑ 1.0 2,541 1

Seq Scan on juliet_november romeo_kilo (cost=0.00..459.75 rows=2,575 width=675) (actual time=0.005..0.993 rows=2,541 loops=1)

29. 0.676 0.676 ↑ 1.0 1 169

Index Scan using charlie on uniform_kilo victor_romeo (cost=0.43..1.95 rows=1 width=32) (actual time=0.004..0.004 rows=1 loops=169)

  • Index Cond: (sierra_foxtrot = lima_delta1.quebec_seven)
30. 0.119 0.460 ↑ 1.0 902 1

Hash (cost=194.02..194.02 rows=902 width=69) (actual time=0.459..0.460 rows=902 loops=1)

  • Buckets: 1,024 Batches: 1 Memory Usage: 98kB
31. 0.341 0.341 ↑ 1.0 902 1

Seq Scan on oscar_oscar yankee_xray (cost=0.00..194.02 rows=902 width=69) (actual time=0.006..0.341 rows=902 loops=1)

32. 0.160 0.537 ↓ 1.0 1,193 1

Hash (cost=259.78..259.78 rows=1,178 width=41) (actual time=0.537..0.537 rows=1,193 loops=1)

  • Buckets: 2,048 Batches: 1 Memory Usage: 107kB
33. 0.377 0.377 ↓ 1.0 1,193 1

Seq Scan on whiskey_tango hotel_golf (cost=0.00..259.78 rows=1,178 width=41) (actual time=0.004..0.377 rows=1,193 loops=1)

Planning time : 35.531 ms
Execution time : 41.433 ms