explain.depesz.com

PostgreSQL's explain analyze made readable

Result: LGms

Settings
# exclusive inclusive rows x rows loops node
1. 14,202.283 72,401.409 ↑ 219,824.4 30 1

Merge Left Join (cost=3,144,191.27..4,160,025.40 rows=6,594,733 width=72) (actual time=34,511.907..72,401.409 rows=30 loops=1)

  • Merge Cond: (oc.id = f.parent_id)
  • Filter: ((oc.cnt_picture <> (COALESCE((sum(oc2.cnt_picture)), '0'::bigint) + COALESCE((sum(CASE WHEN (fi.filesort_id = 1) THEN 1 ELSE 0 END)), '0'::bigint))) OR (oc.cnt_spreadsheet <> (COALESCE((sum(oc2.cnt_spreadsheet)), '0'::bigint) + COALESCE((sum(CASE WHEN (fi.filesort_id = 2) THEN 1 ELSE 0 END)), '0'::bigint))) OR (oc.cnt_video <> (COALESCE((sum(oc2.cnt_video)), '0'::bigint) + COALESCE((sum(CASE WHEN (fi.filesort_id = 3) THEN 1 ELSE 0 END)), '0'::bigint))) OR (oc.cnt_text <> (COALESCE((sum(oc2.cnt_text)), '0'::bigint) + COALESCE((sum(CASE WHEN (fi.filesort_id = 4) THEN 1 ELSE 0 END)), '0'::bigint))) OR (oc.cnt_pdf <> (COALESCE((sum(oc2.cnt_pdf)), '0'::bigint) + COALESCE((sum(CASE WHEN (fi.filesort_id = 5) THEN 1 ELSE 0 END)), '0'::bigint))) OR (oc.cnt_presentation <> (COALESCE((sum(oc2.cnt_presentation)), '0'::bigint) + COALESCE((sum(CASE WHEN (fi.filesort_id = 6) THEN 1 ELSE 0 END)), '0'::bigint))) OR (oc.cnt_audio <> (COALESCE((sum(oc2.cnt_audio)), '0'::bigint) + COALESCE((sum(CASE WHEN (fi.filesort_id = 7) THEN 1 ELSE 0 END)), '0'::bigint))) OR (oc.cnt_other <> (COALESCE((sum(oc2.cnt_other)), '0'::bigint) + COALESCE((sum(CASE WHEN (fi.filesort_id = 8) THEN 1 ELSE 0 END)), '0'::bigint))) OR ((oc.size)::numeric <> (COALESCE((sum(oc2.size)), '0'::numeric) + COALESCE((sum(fi.filesize)), '0'::numeric))) OR (oc.cnt_direct_folders <> COALESCE((count(*)), '0'::bigint)) OR (oc.cnt_direct_files <> COALESCE((count(*)), '0'::bigint)))
  • Rows Removed by Filter: 6565571
2. 2,820.250 29,118.430 ↑ 1.0 6,565,601 1

Merge Left Join (cost=990,006.45..1,609,636.75 rows=6,594,733 width=260) (actual time=8,372.728..29,118.430 rows=6,565,601 loops=1)

  • Merge Cond: (oc.id = fi.folder_id)
3. 9,840.279 9,840.279 ↑ 1.0 6,565,601 1

Index Scan using pk_containers on containers oc (cost=0.43..392,646.24 rows=6,594,733 width=156) (actual time=0.043..9,840.279 rows=6,565,601 loops=1)

  • Filter: (objecttype_id = 4)
  • Rows Removed by Filter: 1935322
4. 224.842 16,457.901 ↓ 12.7 415,569 1

Materialize (cost=990,006.02..1,200,167.52 rows=32,772 width=112) (actual time=8,372.681..16,457.901 rows=415,569 loops=1)

5. 6,107.650 16,233.059 ↓ 12.7 415,569 1

GroupAggregate (cost=990,006.02..1,199,757.87 rows=32,772 width=112) (actual time=8,372.676..16,233.059 rows=415,569 loops=1)

  • Group Key: fi.folder_id
6. 7,356.948 10,125.409 ↑ 1.0 4,186,844 1

Sort (cost=990,006.02..1,000,473.13 rows=4,186,844 width=18) (actual time=8,372.572..10,125.409 rows=4,186,844 loops=1)

  • Sort Key: fi.folder_id
  • Sort Method: external merge Disk: 139160kB
7. 2,768.461 2,768.461 ↑ 1.0 4,186,844 1

Seq Scan on files fi (cost=0.00..271,910.44 rows=4,186,844 width=18) (actual time=0.017..2,768.461 rows=4,186,844 loops=1)

8. 169.928 29,080.696 ↓ 17.2 315,545 1

Materialize (cost=2,154,184.82..2,351,611.43 rows=18,343 width=112) (actual time=22,464.939..29,080.696 rows=315,545 loops=1)

9. 4,630.906 28,910.768 ↓ 17.2 315,545 1

GroupAggregate (cost=2,154,184.82..2,351,382.14 rows=18,343 width=112) (actual time=22,464.934..28,910.768 rows=315,545 loops=1)

  • Group Key: f.parent_id
10. 10,276.649 24,279.862 ↑ 1.0 6,565,601 1

Sort (cost=2,154,184.82..2,170,598.82 rows=6,565,601 width=48) (actual time=22,464.899..24,279.862 rows=6,565,601 loops=1)

  • Sort Key: f.parent_id
  • Sort Method: external merge Disk: 372272kB
11. 5,079.088 14,003.213 ↑ 1.0 6,565,601 1

Merge Join (cost=150.38..804,832.55 rows=6,565,601 width=48) (actual time=0.053..14,003.213 rows=6,565,601 loops=1)

  • Merge Cond: (oc2.id = f.id)
12. 4,758.048 4,758.048 ↑ 1.0 8,500,923 1

Index Scan using pk_containers on containers oc2 (cost=0.43..371,393.94 rows=8,500,923 width=48) (actual time=0.033..4,758.048 rows=8,500,923 loops=1)

13. 4,166.077 4,166.077 ↑ 1.0 6,565,601 1

Index Scan using pk_folders on folders f (cost=0.43..330,151.55 rows=6,565,601 width=16) (actual time=0.013..4,166.077 rows=6,565,601 loops=1)