-- create random string with length X

CREATE FUNCTION random_string(randomLength int)
RETURNS text AS
$$
SELECT array_to_string(
    ARRAY(
        SELECT substring(
            'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789',
            trunc(random() * 62)::int + 1,
            1
        )
        FROM generate_series(1, randomLength) AS gs(x)
    ),
    ''
)
$$
LANGUAGE SQL
RETURNS NULL ON NULL INPUT
VOLATILE; -- LEAKPROOF;