expose/database/migrations/08_add_domain_to_subdomains_table.sql

ALTER TABLE users ADD can_specify_domains BOOLEAN DEFAULT 1;
ALTER TABLE subdomains ADD domain STRING;

CREATE TABLE IF NOT EXISTS domains (
  id INTEGER PRIMARY KEY AUTOINCREMENT,
  user_id INTEGER NOT NULL,
  domain STRING NOT NULL,
  created_at DATETIME,
  updated_at DATETIME
)