explain.depesz.com

PostgreSQL's explain analyze made readable

Result: ygXy

Settings
# exclusive inclusive rows x rows loops node
1. 0.256 185,166.251 ↑ 1.0 1 1

Aggregate (cost=12,467,662.78..12,467,662.79 rows=1 width=32) (actual time=185,166.251..185,166.251 rows=1 loops=1)

2. 0.321 185,165.995 ↑ 3.1 274 1

Subquery Scan on q (cost=12,467,352.56..12,467,660.65 rows=850 width=44) (actual time=184,930.120..185,165.995 rows=274 loops=1)

3. 189.737 185,165.674 ↑ 3.1 274 1

GroupAggregate (cost=12,467,352.56..12,467,652.15 rows=850 width=255) (actual time=184,930.097..185,165.674 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. 172.254 184,975.937 ↓ 8.2 36,284 1

Sort (cost=12,466,442.10..12,466,453.11 rows=4,404 width=211) (actual time=184,928.235..184,975.937 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: external merge Disk: 6824kB
7. 14.401 184,803.683 ↓ 8.2 36,284 1

Nested Loop Left Join (cost=20,141.60..12,466,175.56 rows=4,404 width=211) (actual time=66.648..184,803.683 rows=36,284 loops=1)

  • Join Filter: NULL::boolean
8. 326.390 184,789.282 ↓ 8.2 36,284 1

Hash Join (cost=20,141.60..12,466,131.52 rows=4,404 width=211) (actual time=66.642..184,789.282 rows=36,284 loops=1)

  • Hash Cond: (road_segments.trip_id = road_movements.trip_id)
9. 87,243.161 184,453.001 ↓ 4.8 2,799,258 1

Hash Join (cost=8,384.17..12,452,853.19 rows=579,383 width=195) (actual time=18.788..184,453.001 rows=2,799,258 loops=1)

  • Hash Cond: (road_segments.link_id = v_transit_roads.link_id)
10. 97,195.394 97,195.394 ↑ 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=0.017..97,195.394 rows=593,771,497 loops=1)

11. 1.730 14.446 ↓ 3.4 2,881 1

Hash (cost=8,373.54..8,373.54 rows=850 width=187) (actual time=14.444..14.446 rows=2,881 loops=1)

  • Buckets: 4096 (originally 1024) Batches: 1 (originally 1) Memory Usage: 523kB
12. 12.142 12.716 ↓ 3.4 2,881 1

Bitmap Heap Scan on v_transit_roads (cost=91.63..8,373.54 rows=850 width=187) (actual time=0.743..12.716 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. 0.574 0.574 ↓ 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=0.574..0.574 rows=2,882 loops=1)

  • Index Cond: (geometry && '0103000020110F000001000000050000008FC2B976272970415C8FE237662F48C18FC2B97627297041EC51F818D67B48C1E17ADC72B5327041EC51F818D67B48C1E17ADC72B53270415C8FE237662F48C18FC2B976272970415C8FE237662F48C1'::geometry)
14. 1.118 9.891 ↑ 1.1 4,113 1

Hash (cost=11,702.07..11,702.07 rows=4,429 width=32) (actual time=9.891..9.891 rows=4,113 loops=1)

  • Buckets: 8192 Batches: 1 Memory Usage: 322kB
15. 8.183 8.773 ↑ 1.1 4,113 1

Bitmap Heap Scan on road_movements (cost=86.75..11,702.07 rows=4,429 width=32) (actual time=0.956..8.773 rows=4,113 loops=1)

  • Recheck Cond: (commod_id = ANY ('{2}'::integer[]))
  • Heap Blocks: exact=2378
16. 0.590 0.590 ↑ 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=0.590..0.590 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 : 7.593 ms