explain.depesz.com

PostgreSQL's explain analyze made readable

Result: QF66

Settings
# exclusive inclusive rows x rows loops node
1. 307.796 183,160.472 ↓ 9.3 36,284 1

Hash Join (cost=19,086.81..12,465,086.43 rows=3,882 width=304) (actual time=1,679.442..183,160.472 rows=36,284 loops=1)

  • Hash Cond: (road_segments.trip_id = road_movements.trip_id)
2. 87,749.480 182,771.983 ↓ 4.8 2,799,258 1

Hash Join (cost=8,384.17..12,452,853.19 rows=579,383 width=195) (actual time=1,243.021..182,771.983 rows=2,799,258 loops=1)

  • Hash Cond: (road_segments.link_id = v_transit_roads.link_id)
3. 93,785.301 93,785.301 ↑ 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=0.279..93,785.301 rows=593,771,497 loops=1)

4. 3.150 1,237.202 ↓ 3.4 2,881 1

Hash (cost=8,373.54..8,373.54 rows=850 width=187) (actual time=1,237.200..1,237.202 rows=2,881 loops=1)

  • Buckets: 4096 (originally 1024) Batches: 1 (originally 1) Memory Usage: 523kB
5. 969.501 1,234.052 ↓ 3.4 2,881 1

Bitmap Heap Scan on v_transit_roads (cost=91.63..8,373.54 rows=850 width=187) (actual time=291.415..1,234.052 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
6. 264.551 264.551 ↓ 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=264.551..264.551 rows=2,882 loops=1)

  • Index Cond: (geometry && '0103000020110F000001000000050000008FC2B976272970415C8FE237662F48C18FC2B97627297041EC51F818D67B48C1E17ADC72B5327041EC51F818D67B48C1E17ADC72B53270415C8FE237662F48C18FC2B976272970415C8FE237662F48C1'::geometry)
7. 2.802 80.693 ↓ 1.1 4,113 1

Hash (cost=10,653.84..10,653.84 rows=3,904 width=117) (actual time=80.693..80.693 rows=4,113 loops=1)

  • Buckets: 8192 (originally 4096) Batches: 1 (originally 1) Memory Usage: 694kB
8. 26.767 77.891 ↓ 1.1 4,113 1

Bitmap Heap Scan on road_movements (cost=74.68..10,653.84 rows=3,904 width=117) (actual time=51.503..77.891 rows=4,113 loops=1)

  • Recheck Cond: (commod_id = 2)
  • Heap Blocks: exact=2378
9. 51.124 51.124 ↓ 1.1 4,113 1

Bitmap Index Scan on idx_road_movements_commod_id (cost=0.00..73.70 rows=3,904 width=0) (actual time=51.124..51.124 rows=4,113 loops=1)

  • Index Cond: (commod_id = 2)
Planning time : 11.813 ms