Postgresql random number

CREATE OR REPLACE FUNCTION random_between(low INT ,high INT) 
   RETURNS INT AS
$$
BEGIN
   RETURN floor(random()* (high-low + 1) + low);
END;
$$ language 'plpgsql' STRICT;

Source: postgresqltutorial.com

Postgresql random number

SELECT floor(random() * (h-l+1) + l)::int;

Source: postgresqltutorial.com

Generate random data postgresql

insert into towns (
    code, article, name, department
)
select
    left(md5(i::text), 10),
    md5(random()::text),
    md5(random()::text),
    left(md5(random()::text), 4)
from generate_series(1, 1000000) s(i)

Source: stackoverflow.com

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