explain.depesz.com

PostgreSQL's explain analyze made readable

Result: y7Fj : Optimization for: plan #tXWQ

Settings

Optimization path:

# exclusive inclusive rows x rows loops node
1. 605.262 605.262 ↑ 5.1 10,309 1

CTE Scan on rec (cost=17,228.06..18,283.06 rows=52,750 width=124) (actual time=0.063..605.262 rows=10,309 loops=1)

2.          

CTE rec

3. 3.414 601.269 ↑ 5.1 10,309 1

Recursive Union (cost=0.57..17,228.06 rows=52,750 width=75) (actual time=0.062..601.269 rows=10,309 loops=1)

4. 0.001 0.063 ↑ 20.0 2 1

Nested Loop (cost=0.57..48.22 rows=40 width=75) (actual time=0.061..0.063 rows=2 loops=1)

5. 0.002 0.060 ↑ 20.0 2 1

Nested Loop (cost=0.29..33.18 rows=40 width=16) (actual time=0.059..0.060 rows=2 loops=1)

6. 0.055 0.055 ↑ 1.0 1 1

Seq Scan on svnfiles fl (cost=0.00..11.14 rows=1 width=4) (actual time=0.055..0.055 rows=1 loops=1)

  • Filter: (name = 'UY2MV9ZXMY'::text)
  • Rows Removed by Filter: 570
7. 0.003 0.003 ↑ 20.0 2 1

Index Scan using idx_svn_log_entry_details_file_id on svnlogentrydetails fed (cost=0.29..21.64 rows=40 width=16) (actual time=0.003..0.003 rows=2 loops=1)

  • Index Cond: (fileid = fl.id)
8. 0.002 0.002 ↑ 1.0 1 2

Index Scan using svnlogentries_pkey on svnlogentries fe (cost=0.29..0.37 rows=1 width=63) (actual time=0.001..0.001 rows=1 loops=2)

  • Index Cond: (id = fed.logid)
  • Filter: (NOT isdeleted)
9. 118.900 597.792 ↑ 53.2 99 104

Hash Join (cost=824.48..1,612.48 rows=5,271 width=75) (actual time=5.001..5.748 rows=99 loops=104)

  • Hash Cond: (fe_1.id = fed_1.logid)
  • Join Filter: (fe_1.revision <= rec_1.copyrevision)
  • Rows Removed by Join Filter: 0
10. 227.836 227.836 ↑ 1.0 22,571 103

Seq Scan on svnlogentries fe_1 (cost=0.00..505.71 rows=22,571 width=63) (actual time=0.002..2.212 rows=22,571 loops=103)

  • Filter: (NOT isdeleted)
11. 1.976 251.056 ↑ 159.7 99 104

Hash (cost=626.83..626.83 rows=15,812 width=20) (actual time=2.414..2.414 rows=99 loops=104)

  • Buckets: 16384 Batches: 1 Memory Usage: 128kB
12. 142.258 249.080 ↑ 159.7 99 104

Hash Join (cost=35.35..626.83 rows=15,812 width=20) (actual time=1.833..2.395 rows=99 loops=104)

  • Hash Cond: (fed_1.fileid = fl_1.id)
13. 105.678 105.678 ↑ 1.0 22,572 103

Seq Scan on svnlogentrydetails fed_1 (cost=0.00..348.72 rows=22,572 width=16) (actual time=0.003..1.026 rows=22,572 loops=103)

14. 0.104 1.144 ↑ 400.0 1 104

Hash (cost=30.35..30.35 rows=400 width=12) (actual time=0.011..0.011 rows=1 loops=104)

  • Buckets: 1024 Batches: 1 Memory Usage: 8kB
15. 0.388 1.040 ↑ 400.0 1 104

Hash Join (cost=16.85..30.35 rows=400 width=12) (actual time=0.003..0.010 rows=1 loops=104)

  • Hash Cond: (rec_1.copyfile = fl_1.id)
16. 0.520 0.520 ↑ 4.0 99 104

WorkTable Scan on rec rec_1 (cost=0.00..8.00 rows=400 width=8) (actual time=0.000..0.005 rows=99 loops=104)

17. 0.080 0.132 ↑ 1.0 571 1

Hash (cost=9.71..9.71 rows=571 width=4) (actual time=0.132..0.132 rows=571 loops=1)

  • Buckets: 1024 Batches: 1 Memory Usage: 29kB
18. 0.052 0.052 ↑ 1.0 571 1

Seq Scan on svnfiles fl_1 (cost=0.00..9.71 rows=571 width=4) (actual time=0.007..0.052 rows=571 loops=1)