ALTER TABLE users ADD COLUMN is_onboarder BOOLEAN NOT NULL DEFAULT FALSE;

ALTER TABLE users ADD COLUMN onboarding_status VARCHAR DEFAULT 'Unassigned';
ALTER TABLE users ADD COLUMN onboarding_lost_reason VARCHAR;
ALTER TABLE users ADD COLUMN onboarding_lost_at DATE;
ALTER TABLE users ADD COLUMN onboarding_escalation_reason VARCHAR;
ALTER TABLE users ADD COLUMN onboarding_escalated_at date;
ALTER TABLE users ADD COLUMN onboarder_id VARCHAR(64) REFERENCES users ON DELETE SET NULL;
ALTER TABLE users ADD COLUMN onboarder_assigned_at DATE;
ALTER TABLE users ADD COLUMN onboarding_email_1_sent_at DATE;
ALTER TABLE users ADD COLUMN onboarding_email_2_sent_at DATE;
ALTER TABLE users ADD COLUMN onboarding_email_3_sent_at DATE;
ALTER TABLE users ADD COLUMN onboarding_email_4_sent_at DATE;
ALTER TABLE users ADD COLUMN onboarding_email_5_sent_at DATE;
ALTER TABLE users ADD COLUMN onboarding_test_session_scheduled_at DATE;
ALTER TABLE users ADD COLUMN onboarding_test_session_at timestamp without time zone;
ALTER TABLE users ADD COLUMN onboarding_test_session_outcome VARCHAR;
ALTER TABLE users ADD COLUMN onboarding_onboarded_at DATE;
ALTER TABLE users ADD COLUMN onboarding_onboarder_notes VARCHAR;
ALTER TABLE users ADD COLUMN first_onboarding_free_lesson_at timestamp without time zone;
ALTER TABLE users ADD COLUMN first_onboarding_paid_lesson_at timestamp without time zone;