Query Any Database.
With One SDK.

const profileFilter = new ZTeraDBQuery('profiles')
  .select()
  .fields({ profile_data: 1 });

const query = new ZTeraDBQuery('users')
  .select()
  .fields({ id: 1, email: 1 })
  .filter({ is_active: true })
  .relatedFields({ profile: profileFilter });

// Streams async frames over low-overhead TCP
for await (const row of await db.run(query)) {
  console.log(row);
}

SELECT 
  u.id, 
  u.email, 
  p.profile_data->>'avatar' AS avatar 
FROM users u 
LEFT JOIN profiles p ON u.id = p.user_id 
WHERE u.is_active = true;