Generate test data

postgresql.sql

INSERT INTO test_table (service_id, event_type, creation_date)
SELECT
  generate_series(7070001, 7070010) AS service_id,
  ('{clicked,pageview,failed}'::text[])[ceil(random()*3)] AS event_type,
    timestamp '2016-01-10 20:00:00' + random() * (timestamp '2017-02-21 20:00:00' - timestamp '2016-01-10 10:00:00') AS creation_date
FROM generate_series(1, 10000000) AS X;