explain.depesz.com

PostgreSQL's explain analyze made readable

Result: lXd

Settings
# exclusive inclusive rows x rows loops node
1. 0.006 0.009 ↓ 0.0 0 1

Hash Semi Join (cost=29.50..31,914.41 rows=390 width=271) (actual time=0.009..0.009 rows=0 loops=1)

  • Hash Cond: ((attribute_values.stop_id = stg_forms.stop_id) AND ((timezone((attribute_values.tz)::text, attribute_values.effective_date))::date = (timezone(stg_forms.tz, stg_forms.effective_date))::date))
2. 0.000 0.000 ↓ 0.0 0

Seq Scan on attribute_values (cost=13.50..31,295.03 rows=92,101 width=271) (never executed)

  • Filter: (NOT (hashed SubPlan 1))
3.          

SubPlan (for Seq Scan)

4. 0.000 0.000 ↓ 0.0 0

Seq Scan on stg_attribute_values (cost=0.00..12.80 rows=280 width=16) (never executed)

5. 0.001 0.003 ↓ 0.0 0 1

Hash (cost=12.40..12.40 rows=240 width=40) (actual time=0.003..0.003 rows=0 loops=1)

  • Buckets: 1024 Batches: 1 Memory Usage: 8kB
6. 0.002 0.002 ↓ 0.0 0 1

Seq Scan on stg_forms (cost=0.00..12.40 rows=240 width=40) (actual time=0.002..0.002 rows=0 loops=1)