explain.depesz.com

PostgreSQL's explain analyze made readable

Result: id2w

Settings
# exclusive inclusive rows x rows loops node
1. 0.260 179,011.846 ↑ 1.0 1 1

Aggregate (cost=12,467,662.78..12,467,662.79 rows=1 width=32) (actual time=179,011.846..179,011.846 rows=1 loops=1)

2. 0.340 179,011.586 ↑ 3.1 274 1

Subquery Scan on q (cost=12,467,352.56..12,467,660.65 rows=850 width=44) (actual time=178,819.029..179,011.586 rows=274 loops=1)

3. 188.110 179,011.246 ↑ 3.1 274 1

GroupAggregate (cost=12,467,352.56..12,467,652.15 rows=850 width=255) (actual time=178,819.006..179,011.246 rows=274 loops=1)

  • Group Key: v_transit_roads.link_id, v_transit_roads.street_name, v_transit_roads.road_speed, v_transit_roads.road_rank, v_transit_roads.truck, v_transit_roads.surface, v_transit_roads.road_km, v_transit_roads.geometry
4.          

CTE boundaries

5. 0.000 0.000 ↓ 0.0 0

Seq Scan on v_transit_boundaries (cost=0.00..910.46 rows=3,346 width=75,373) (never executed)

6. 68.936 178,823.136 ↓ 8.2 36,284 1

Sort (cost=12,466,442.10..12,466,453.11 rows=4,404 width=211) (actual time=178,817.431..178,823.136 rows=36,284 loops=1)

  • Sort Key: v_transit_roads.link_id, v_transit_roads.street_name, v_transit_roads.road_speed, v_transit_roads.road_rank, v_transit_roads.truck, v_transit_roads.surface, v_transit_roads.road_km, v_transit_roads.geometry
  • Sort Method: quicksort Memory: 12500kB
7. 13.969 178,754.200 ↓ 8.2 36,284 1

Nested Loop Left Join (cost=20,141.60..12,466,175.56 rows=4,404 width=211) (actual time=652.922..178,754.200 rows=36,284 loops=1)

  • Join Filter: NULL::boolean
8. 306.525 178,740.231 ↓ 8.2 36,284 1

Hash Join (cost=20,141.60..12,466,131.52 rows=4,404 width=211) (actual time=652.914..178,740.231 rows=36,284 loops=1)

  • Hash Cond: (road_segments.trip_id = road_movements.trip_id)
9. 87,979.646 178,406.339 ↓ 4.8 2,799,258 1

Hash Join (cost=8,384.17..12,452,853.19 rows=579,383 width=195) (actual time=143.701..178,406.339 rows=2,799,258 loops=1)

  • Hash Cond: (road_segments.link_id = v_transit_roads.link_id)
10. 90,405.861 90,405.861 ↑ 1.0 593,771,497 1

Seq Scan on road_segments (cost=0.00..10,885,811.20 rows=593,771,520 width=16) (actual time=0.180..90,405.861 rows=593,771,497 loops=1)

11. 2.041 20.832 ↓ 3.4 2,881 1

Hash (cost=8,373.54..8,373.54 rows=850 width=187) (actual time=20.830..20.832 rows=2,881 loops=1)

  • Buckets: 4096 (originally 1024) Batches: 1 (originally 1) Memory Usage: 523kB
12. 17.975 18.791 ↓ 3.4 2,881 1

Bitmap Heap Scan on v_transit_roads (cost=91.63..8,373.54 rows=850 width=187) (actual time=0.986..18.791 rows=2,881 loops=1)

  • Recheck Cond: (geometry && '0103000020110F000001000000050000008FC2B976272970415C8FE237662F48C18FC2B97627297041EC51F818D67B48C1E17ADC72B5327041EC51F818D67B48C1E17ADC72B53270415C8FE237662F48C18FC2B976272970415C8FE237662F48C1'::geometry)
  • Filter: _st_intersects(geometry, '0103000020110F000001000000050000008FC2B976272970415C8FE237662F48C18FC2B97627297041EC51F818D67B48C1E17ADC72B5327041EC51F818D67B48C1E17ADC72B53270415C8FE237662F48C18FC2B976272970415C8FE237662F48C1'::geometry)
  • Rows Removed by Filter: 1
  • Heap Blocks: exact=599
13. 0.816 0.816 ↓ 1.1 2,882 1

Bitmap Index Scan on v_transit_roads_geometry_geom_idx (cost=0.00..91.42 rows=2,551 width=0) (actual time=0.816..0.816 rows=2,882 loops=1)

  • Index Cond: (geometry && '0103000020110F000001000000050000008FC2B976272970415C8FE237662F48C18FC2B97627297041EC51F818D67B48C1E17ADC72B5327041EC51F818D67B48C1E17ADC72B53270415C8FE237662F48C18FC2B976272970415C8FE237662F48C1'::geometry)
14. 1.684 27.367 ↑ 1.1 4,113 1

Hash (cost=11,702.07..11,702.07 rows=4,429 width=32) (actual time=27.367..27.367 rows=4,113 loops=1)

  • Buckets: 8192 Batches: 1 Memory Usage: 322kB
15. 24.930 25.683 ↑ 1.1 4,113 1

Bitmap Heap Scan on road_movements (cost=86.75..11,702.07 rows=4,429 width=32) (actual time=1.142..25.683 rows=4,113 loops=1)

  • Recheck Cond: (commod_id = ANY ('{2}'::integer[]))
  • Heap Blocks: exact=2378
16. 0.753 0.753 ↑ 1.1 4,113 1

Bitmap Index Scan on idx_road_movements_commod_id (cost=0.00..85.64 rows=4,429 width=0) (actual time=0.753..0.753 rows=4,113 loops=1)

  • Index Cond: (commod_id = ANY ('{2}'::integer[]))
17. 0.000 0.000 ↓ 0.0 0 36,284

Result (cost=0.00..0.00 rows=0 width=0) (actual time=0.000..0.000 rows=0 loops=36,284)

  • One-Time Filter: false
Planning time : 8.511 ms