explain.depesz.com

PostgreSQL's explain analyze made readable

Result: ZIA

Settings
# exclusive inclusive rows x rows loops node
1. 0.239 86,267.514 ↑ 1.0 1 1

Aggregate (cost=10,015,759,442.91..10,015,759,442.92 rows=1 width=32) (actual time=86,267.514..86,267.514 rows=1 loops=1)

2. 0.336 86,267.275 ↑ 3.1 274 1

Subquery Scan on q (cost=10,015,759,132.69..10,015,759,440.78 rows=850 width=44) (actual time=86,077.964..86,267.275 rows=274 loops=1)

3. 187.454 86,266.939 ↑ 3.1 274 1

GroupAggregate (cost=10,015,759,132.69..10,015,759,432.28 rows=850 width=255) (actual time=86,077.947..86,266.939 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=10,000,000,000.00..10,000,000,910.46 rows=3,346 width=75,373) (never executed)

6. 82.279 86,079.485 ↓ 8.2 36,284 1

Sort (cost=15,758,222.23..15,758,233.24 rows=4,404 width=211) (actual time=86,076.463..86,079.485 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. 27.688 85,997.206 ↓ 8.2 36,284 1

Nested Loop Left Join (cost=11,944.69..15,757,955.68 rows=4,404 width=211) (actual time=9,439.280..85,997.206 rows=36,284 loops=1)

  • Join Filter: NULL::boolean
8. 767.949 85,969.518 ↓ 8.2 36,284 1

Hash Join (cost=11,944.69..15,757,911.64 rows=4,404 width=211) (actual time=9,439.276..85,969.518 rows=36,284 loops=1)

  • Hash Cond: (road_segments.trip_id = road_movements.trip_id)
9. 862.219 85,191.781 ↓ 4.8 2,799,258 1

Nested Loop (cost=187.26..15,744,633.32 rows=579,383 width=195) (actual time=38.174..85,191.781 rows=2,799,258 loops=1)

10. 465.871 466.533 ↓ 3.4 2,881 1

Bitmap Heap Scan on v_transit_roads (cost=91.63..8,373.54 rows=850 width=187) (actual time=0.837..466.533 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
11. 0.662 0.662 ↓ 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=0.662..0.662 rows=2,882 loops=1)

  • Index Cond: (geometry && '0103000020110F000001000000050000008FC2B976272970415C8FE237662F48C18FC2B97627297041EC51F818D67B48C1E17ADC72B5327041EC51F818D67B48C1E17ADC72B53270415C8FE237662F48C18FC2B976272970415C8FE237662F48C1'::geometry)
12. 78,622.490 83,863.029 ↑ 5.2 972 2,881

Bitmap Heap Scan on road_segments (cost=95.63..18,462.60 rows=5,065 width=16) (actual time=2.009..29.109 rows=972 loops=2,881)

  • Recheck Cond: (link_id = v_transit_roads.link_id)
  • Heap Blocks: exact=2799258
13. 5,240.539 5,240.539 ↑ 5.2 972 2,881

Bitmap Index Scan on idx_road_segments_link_id (cost=0.00..94.36 rows=5,065 width=0) (actual time=1.819..1.819 rows=972 loops=2,881)

  • Index Cond: (link_id = v_transit_roads.link_id)
14. 1.062 9.788 ↑ 1.1 4,113 1

Hash (cost=11,702.07..11,702.07 rows=4,429 width=32) (actual time=9.788..9.788 rows=4,113 loops=1)

  • Buckets: 8192 Batches: 1 Memory Usage: 322kB
15. 8.171 8.726 ↑ 1.1 4,113 1

Bitmap Heap Scan on road_movements (cost=86.75..11,702.07 rows=4,429 width=32) (actual time=0.920..8.726 rows=4,113 loops=1)

  • Recheck Cond: (commod_id = ANY ('{2}'::integer[]))
  • Heap Blocks: exact=2378
16. 0.555 0.555 ↑ 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=0.555..0.555 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 : 6.917 ms