explain.depesz.com

PostgreSQL's explain analyze made readable

Result: vXIm

Settings
# exclusive inclusive rows x rows loops node
1. 0.002 13.210 ↓ 0.0 0 1

Limit (cost=5,049.79..5,049.79 rows=2 width=551) (actual time=13.210..13.210 rows=0 loops=1)

  • (channels && '{IFOOD}'::text[]))
2. 0.010 13.208 ↓ 0.0 0 1

Sort (cost=5,049.79..5,049.79 rows=2 width=551) (actual time=13.208..13.208 rows=0 loops=1)

  • Sort Key: t2.distance, t2.score DESC, t2.merchant_short_id
  • Sort Method: quicksort Memory: 25kB
3. 0.002 13.198 ↓ 0.0 0 1

Subquery Scan on t2 (cost=5,048.31..5,049.78 rows=2 width=551) (actual time=13.197..13.198 rows=0 loops=1)

  • Filter: (t2.group_rn <= 1)
4. 0.002 13.196 ↓ 0.0 0 1

WindowAgg (cost=5,048.31..5,049.16 rows=6 width=500) (actual time=13.196..13.196 rows=0 loops=1)

5. 0.008 13.194 ↓ 0.0 0 1

Sort (cost=5,048.31..5,048.32 rows=6 width=616) (actual time=13.193..13.194 rows=0 loops=1)

  • Sort Key: merc.group_id, ((merc.available AND (COALESCE(merc.connected, false) OR merc.always_online) AND COALESCE((true), false))) DESC, merc.chain_priority DESC, d.distance, (
  • Sort Method: quicksort Memory: 25kB
6. 0.002 13.186 ↓ 0.0 0 1

Nested Loop Left Join (cost=0.98..5,048.23 rows=6 width=616) (actual time=13.185..13.186 rows=0 loops=1)

7. 0.003 13.184 ↓ 0.0 0 1

Nested Loop (cost=0.70..5,022.94 rows=6 width=538) (actual time=13.184..13.184 rows=0 loops=1)

8. 0.064 13.025 ↑ 6.0 1 1

Nested Loop Left Join (cost=0.43..5,021.46 rows=6 width=506) (actual time=1.565..13.025 rows=1 loops=1)

  • Filter: COALESCE((true), false)
  • -> Index Only Scan using merchant_shifts_merchant_short_id_dow_shift_range_excl on merchant_shifts shift (cost=0.43..2.73 rows=1 width=31) (actual time=0.041
9. 12.961 12.961 ↑ 11.0 1 1

Seq Scan on merchants merc (cost=0.00..4,990.34 rows=11 width=519) (actual time=1.511..12.961 rows=1 loops=1)

  • Filter: (supports_takeout AND (NOT supports_delivery) AND (NOT supports_dark_kitchen) AND available AND (COALESCE(connected, false) OR always_online) AND
  • Rows Removed by Filter: 18734
  • Index Cond: ((merchant_short_id = merc.merchant_short_id) AND (dow = (date_part('dow'::text, timezone((merc.timezone)::text, now())))::integer) AND (shif
  • Heap Fetches: 1
10. 0.156 0.156 ↓ 0.0 0 1

Function Scan on round d (cost=0.26..0.36 rows=1 width=32) (actual time=0.156..0.156 rows=0 loops=1)

  • Filter: (distance <= 15.0)
  • Rows Removed by Filter: 1
11. 0.000 0.000 ↓ 0.0 0

Index Scan using chain_external_id_key on merchant_chain chain (cost=0.28..4.21 rows=1 width=82) (never executed)

  • Index Cond: ((merc.group_id)::text = (external_id)::text)