#	exclusive	inclusive	rows x	rows	loops	node
1.	1.346	33209.936	↑ 1.0	1000	1	→ Limit (cost=294849.26..343990.80 rows=1000 width=1210) (actual time=28667.477..33209.936 rows=1000 loops=1)
2.	17.770	33208.590	↑ 73.9	7000	1	→ Nested Loop Left Join (cost=0.00..25409568.66 rows=517069 width=1210) (actual time=0.022..33208.590 rows=7000 loops=1)
3.	17.820	17.820	↑ 73.9	7000	1	→ Seq Scan on april_sample (cost=0.00..21656.69 rows=517069 width=35) (actual time=0.007..17.820 rows=7000 loops=1)
4.	33173.000	33173.000	↑ 1.0	1	7000	→ Index Scan using invdat_all_pkey on invdat_all (cost=0.00..49.09 rows=1 width=1183) (actual time=4.718..4.739 rows=1 loops=7000) Index Cond: (april_sample.invno = invno)

Limit  (cost=294849.26..343990.80 rows=1000 width=1210) (actual time=28667.477..33209.936 rows=1000 loops=1)
  ->  Nested Loop Left Join  (cost=0.00..25409568.66 rows=517069 width=1210) (actual time=0.022..33208.590 rows=7000 loops=1)
        ->  Seq Scan on april_sample  (cost=0.00..21656.69 rows=517069 width=35) (actual time=0.007..17.820 rows=7000 loops=1)
        ->  Index Scan using invdat_all_pkey on invdat_all  (cost=0.00..49.09 rows=1 width=1183) (actual time=4.718..4.739 rows=1 loops=7000)
              Index Cond: (april_sample.invno = invno)
Total runtime: 33210.408 ms

Per node type stats

node type	count	sum of times	% of query
Index Scan	1	33173.000 ms	99.9 %
Limit	1	1.346 ms	0.0 %
Nested Loop Left Join	1	17.770 ms	0.1 %
Seq Scan	1	17.820 ms	0.1 %

Per table stats

Table name	Scan count	Total time	% of query
scan type	count	sum of times	% of table
april_sample	1	17.820 ms	0.1 %
Seq Scan	1	17.820 ms	100.0 %
invdat_all	1	33173.000 ms	99.9 %
Index Scan	1	33173.000 ms	100.0 %

explain.depesz.com

A tool for finding a real cause for slow queries.

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Per node type stats

Per table stats