Create or update bulk objects with association

Question

Hello I use INSERT with ON CONFLICT for create or update data.

Example:

INSERT INTO users(office_id, f_name, l_name)
VALUES
  (1, 'user1_f', 'u1_last'),
  (2, 'user2_f', 'u2_last'),
  (2, 'user3_f', 'u2_last')
ON CONFLICT(office_id, l_name)
DO UPDATE SET
  f_name=EXCLUDED.f_name

But can I create also associated to users for example profiles table if user wasn't exist?

I mean if I don't have conflict, will be

INSERT INTO profiles(user_id, url) VALUES(user_id, 'google.com') and user_id will be id from created user

I dont know is it possible. Thanks.

Answer 1

I solved it through Postgres WITH from https://www.postgresql.org/docs/9.6/static/queries-with.html in next way:

WITH new_users AS (
  INSERT INTO users(office_id, f_name, l_name)
  VALUES
    (1, 'user1_f', 'u1_last'),
    (2, 'user2_f', 'u2_last'),
    (2, 'user3_f', 'u2_last')
  ON CONFLICT(office_id, l_name)
  DO UPDATE SET
    f_name=EXCLUDED.f_name
  RETURNING *
), new_user_profile AS (
  INSERT INTO profiles(user_id, created_at, updated_at)
  SELECT id, current_timestamp, current_timestamp FROM new_users
  ON CONFLICT (user_id) DO NOTHING
  RETURNING *
)
SELECT * FROM new_users