|
Here are the EXPLAIN ANALYZE outputs:
explain analyze select * from filter_item where filter_hash = MD5(''); QUERY PLAN ----------------------------------------------------------------------------------------------------------------------- Seq Scan on filter_item (cost=0.00..424644.96 rows=86108 width=49) (ac tual time=8177.807..12421.921 rows=77 loops=1) Filter: ((filter_hash)::text = 'd41d8cd98f00b204e9800998ecf8427e'::text) Total runtime: 12421.959 ms (3 rows) explain analyze select * from filter_item where filter_hash = 'd41d8cd98f00b204e9800998ecf8427e' QUERY PLAN -------------------------------------------------------------------------------------------------------------------------------------- Bitmap Heap Scan on filter_item (cost=77.92..6609.02 rows=3534 width=49) (actual time=0.055..0.100 rows=77 loops=1) Recheck Cond: (filter_hash = 'd41d8cd98f00b204e9800998ecf8427e'::bpchar) -> Bitmap Index Scan on filter_item__filter_hash (cost=0.00..77.04 rows=3534 width=0) (actual time=0.049..0.049 rows=77 loops=1) Index Cond: (filter_hash = 'd41d8cd98f00b204e9800998ecf8427e'::bpchar) Total runtime: 0.130 ms (5 rows) |
