explain.depesz.com

PostgreSQL's explain analyze made readable

Result: QHZp

Settings
# exclusive inclusive rows x rows loops node
1. 0.012 0.570 ↑ 32.0 1 1

Sort (cost=32.93..33.01 rows=32 width=224) (actual time=0.569..0.570 rows=1 loops=1)

  • Sort Key: n.nspname, c.relname
  • Sort Method: quicksort Memory: 25kB
  • Buffers: shared hit=14
  • Buffers: shared hit=6
2. 0.082 0.558 ↑ 32.0 1 1

Hash Join (cost=1.09..32.13 rows=32 width=224) (actual time=0.135..0.558 rows=1 loops=1)

  • Hash Cond: (c.relnamespace = n.oid)
  • Buffers: shared hit=14
3. 0.410 0.410 ↓ 2.0 130 1

Seq Scan on pg_class c (cost=0.00..29.89 rows=65 width=73) (actual time=0.025..0.410 rows=130 loops=1)

  • Filter: ((relkind = ANY ('{r,p,v,m,S,f,""}'::"char"[])) AND pg_table_is_visible(oid))
  • Rows Removed by Filter: 257
  • Buffers: shared hit=13
4. 0.023 0.066 ↑ 2.0 1 1

Hash (cost=1.07..1.07 rows=2 width=68) (actual time=0.066..0.066 rows=1 loops=1)

  • Buckets: 1024 Batches: 1 Memory Usage: 9kB
  • Buffers: shared hit=1
5. 0.043 0.043 ↑ 2.0 1 1

Seq Scan on pg_namespace n (cost=0.00..1.07 rows=2 width=68) (actual time=0.040..0.043 rows=1 loops=1)

  • Filter: ((nspname <> 'pg_catalog'::name) AND (nspname <> 'information_schema'::name) AND (nspname !~ '^pg_toast'::text))
  • Rows Removed by Filter: 3
  • Buffers: shared hit=1
Planning time : 0.604 ms
Execution time : 0.659 ms