1CREATE TABLE IF NOT EXISTS invites (
 2  id SERIAL PRIMARY KEY,
 3  from_user_id uuid NOT NULL,
 4  to_user_id uuid NOT NULL,
 5  created_at timestamp without time zone NOT NULL DEFAULT NOW(),
 6  CONSTRAINT fk_invites_from_app_users
 7    FOREIGN KEY(from_user_id)
 8  REFERENCES app_users(id)
 9  ON DELETE CASCADE
10  ON UPDATE CASCADE,
11  CONSTRAINT fk_invites_to_app_users
12    FOREIGN KEY(to_user_id)
13  REFERENCES app_users(id)
14  ON DELETE CASCADE
15  ON UPDATE CASCADE
16);