Populate Postgres table w/ random data

insert-random.sql

insert into	table (id, another,	jsonb_data)
with data as (
	select i
	from generate_series(1, 1000) as g(i)
)
select
	gen_random_uuid()::text,
	'<insert-id-here>',
	('{"dob": "' || timestamp '1940-01-01 20:00:00' + random() * (timestamp '2020-01-01 10:00:00' - timestamp '1940-01-01 20:00:00') || '", "lastName": "last' || i || '", "firstName": "first' || i || '"}')::json
from data;