On Tuesday, July 19, 2016 6:19 AM, Teodor Sigaev <[email protected]> wrote:
> CREATE INDEX json_tables_idx ON json_tables USING GIN (data jsonb_path_ops);
> Bitmap Heap Scan on json_tables (cost=113.50..37914.64 rows=10000 width=1261)
> (actual time=2157.118..1259550.327 rows=909091 loops=1)
> Recheck Cond: (data @> '{"name": "AC3 Case Red"}'::jsonb)
> Rows Removed by Index Recheck: 4360296
> Heap Blocks: exact=37031 lossy=872059
Hmm, looks like too small work_mem because lossy heap block count is too big.
Ok, thanks.
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Teodor Sigaev E-mail: [email protected]
WWW: http://www.sigaev.ru/
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