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Postgres index: create bloom index

Arti answered on November 25, 2022 Popularity 1/10 Helpfulness 1/10

answer Postgres index: create bloom index

Postgres index: create bloom index

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-- Add extension if it's not installed
CREATE EXTENSION bloom;

-- Create bloom index
CREATE INDEX bloomidx ON tbloom USING bloom (i1,i2,i3)
       WITH (length=80, col1=2, col2=2, col3=4);
       
-- The index is created with a signature length of 80 bits, with attributes i1 and i2 mapped to 2 bits, and attribute i3 mapped to 4 bits. We could have omitted the length, col1, and col2 specifications since those have the default values.

/* Additional Resources

    https://www.percona.com/blog/2019/06/14/bloom-indexes-in-postgresql/
	https://postgrespro.com/blog/pgsql/5967832   
	https://habr.com/en/company/postgrespro/blog/452968/
*/

Popularity 1/10 Helpfulness 1/10 Language sql

Source: www.postgresql.org

Tags: bloom sql

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