explain.depesz.com

PostgreSQL's explain analyze made readable

Result: P5c8

Settings
# exclusive inclusive rows x rows loops node
1. 208.951 253.230 ↓ 5.2 890,723 1

Hash Join (cost=4,490.44..7,423.81 rows=172,780 width=91) (actual time=25.505..253.230 rows=890,723 loops=1)

  • Hash Cond: (post_to_tag_link_1.tag_id = tag.id)
2. 14.235 40.516 ↑ 1.0 32,633 1

Hash Join (cost=4,385.07..5,305.10 rows=32,633 width=4) (actual time=21.722..40.516 rows=32,633 loops=1)

  • Hash Cond: (post_to_tag_link_1.post_id = post.id)
3. 4.895 4.895 ↑ 1.0 32,633 1

Seq Scan on post_to_tag_link post_to_tag_link_1 (cost=0.00..471.33 rows=32,633 width=8) (actual time=0.016..4.895 rows=32,633 loops=1)

4. 9.130 21.386 ↑ 1.0 24,492 1

Hash (cost=4,078.92..4,078.92 rows=24,492 width=4) (actual time=21.386..21.386 rows=24,492 loops=1)

  • Buckets: 32768 Batches: 1 Memory Usage: 1118kB
5. 12.256 12.256 ↑ 1.0 24,492 1

Seq Scan on post (cost=0.00..4,078.92 rows=24,492 width=4) (actual time=0.011..12.256 rows=24,492 loops=1)

6. 0.930 3.763 ↓ 1.1 1,318 1

Hash (cost=90.55..90.55 rows=1,186 width=99) (actual time=3.763..3.763 rows=1,318 loops=1)

  • Buckets: 2048 Batches: 1 Memory Usage: 196kB
7. 0.685 2.833 ↓ 1.1 1,318 1

Hash Join (cost=40.07..90.55 rows=1,186 width=99) (actual time=1.060..2.833 rows=1,318 loops=1)

  • Hash Cond: (card_to_tag_link_1.tag_id = tag.id)
8. 0.868 1.979 ↓ 1.1 1,318 1

Hash Join (cost=30.03..64.20 rows=1,186 width=95) (actual time=0.885..1.979 rows=1,318 loops=1)

  • Hash Cond: (card_to_tag_link_1.card_id = card.id)
9. 0.291 0.291 ↓ 1.1 1,318 1

Seq Scan on card_to_tag_link card_to_tag_link_1 (cost=0.00..17.86 rows=1,186 width=8) (actual time=0.030..0.291 rows=1,318 loops=1)

10. 0.503 0.820 ↑ 1.0 757 1

Hash (cost=20.57..20.57 rows=757 width=91) (actual time=0.819..0.820 rows=757 loops=1)

  • Buckets: 1024 Batches: 1 Memory Usage: 104kB
11. 0.317 0.317 ↑ 1.0 757 1

Seq Scan on card (cost=0.00..20.57 rows=757 width=91) (actual time=0.012..0.317 rows=757 loops=1)

12. 0.087 0.169 ↑ 1.0 224 1

Hash (cost=7.24..7.24 rows=224 width=4) (actual time=0.169..0.169 rows=224 loops=1)

  • Buckets: 1024 Batches: 1 Memory Usage: 16kB
13. 0.082 0.082 ↑ 1.0 224 1

Seq Scan on tag (cost=0.00..7.24 rows=224 width=4) (actual time=0.016..0.082 rows=224 loops=1)