explain.depesz.com

PostgreSQL's explain analyze made readable

Result: WJjP

Settings
# exclusive inclusive rows x rows loops node
1. 0.011 496.562 ↑ 1.0 11 1

Limit (cost=25,257.44..25,257.46 rows=11 width=47) (actual time=496.549..496.562 rows=11 loops=1)

2. 19.338 496.551 ↑ 3,499.0 11 1

Sort (cost=25,257.44..25,353.66 rows=38,489 width=47) (actual time=496.548..496.551 rows=11 loops=1)

  • Sort Key: smart_tag.last_used DESC, smart_tag.id DESC
  • Sort Method: top-N heapsort Memory: 25kB
3. 187.952 477.213 ↓ 1.5 58,061 1

Hash Join (cost=430.31..24,399.24 rows=38,489 width=47) (actual time=1.347..477.213 rows=58,061 loops=1)

  • Hash Cond: (clip_smart_tag.smart_tag_id = smart_tag.id)
4. 287.948 287.948 ↑ 1.0 689,051 1

Seq Scan on clip_smart_tag (cost=0.00..20,990.59 rows=691,587 width=16) (actual time=0.010..287.948 rows=689,051 loops=1)

  • Filter: (confidence > '88'::numeric)
  • Rows Removed by Filter: 220,691
5. 0.521 1.313 ↓ 1.0 1,374 1

Hash (cost=413.18..413.18 rows=1,371 width=47) (actual time=1.312..1.313 rows=1,374 loops=1)

  • Buckets: 2,048 Batches: 1 Memory Usage: 128kB
6. 0.639 0.792 ↓ 1.0 1,374 1

Bitmap Heap Scan on smart_tag (cost=87.04..413.18 rows=1,371 width=47) (actual time=0.171..0.792 rows=1,374 loops=1)

  • Recheck Cond: (workspace_id = 'f2be74b6-d027-4fd3-8047-4a2b99cfe6fa'::uuid)
  • Heap Blocks: exact=129
7. 0.153 0.153 ↓ 1.0 1,389 1

Bitmap Index Scan on smart_tag_workspace_id_label_key (cost=0.00..86.69 rows=1,371 width=0) (actual time=0.153..0.153 rows=1,389 loops=1)

  • Index Cond: (workspace_id = 'f2be74b6-d027-4fd3-8047-4a2b99cfe6fa'::uuid)