active recored where statement - php

Question

In codeigniter I am trying to produce the following SQL statement:
SELECT *
FROM (`ea_users`,`ea_appointments`,`ea_services`)
WHERE `ea_appointments`.`id_users_customer` = `ea_users`.`id`
AND `ea_appointments`.`id_services` = `ea_services`.`id`
AND `ea_appointments`.`start_datetime`> '2015-07-18 00:00:00'
AND `ea_appointments`.`start_datetime`< '2015-07-18 23:59:59'
In the Active Record format I have tried this:
$day_start = date('Y-m-d 00:00:00', $day);
$day_end = date('Y-m-d 23:59:59', $day);
return $this->db->select('*')
->from('ea_appointments,ea_services,ea_users')
->where('ea_appointments.id_users_customer','ea_users.id')
->where('ea_appointments.id_services','ea_services.id')
->where('ea_appointments.start_datetime>',$day_start)
->where('ea_appointments.start_datetime<',$day_end)
->get()->result();
But it produces this instead:
SELECT *
FROM (`ea_appointments`, `ea_services`, `ea_users`)
WHERE `ea_appointments`.`id_users_customer` = 'ea_users.id'
AND `ea_appointments`.`id_services` = 'ea_services.id'
AND `ea_appointments`.`start_datetime>` '2015-07-18 00:00:00'
AND `ea_appointments`.`start_datetime<` '2015-07-18 23:59:59'
How do I get 'ea_users.id' and 'ea_services.id' to be translated as 'ea_users'.'id' and 'ea_services'.'id'? I have tried:
->where('ea_appointments.id_users_customer','ea_users'.'id')
->where('ea_appointments.id_services','ea_services'.'id')
But that produces this:
WHERE `ea_appointments`.`id_users_customer` = 'ea_usersid'
AND `ea_appointments`.`id_services` = 'ea_servicesid'
What is the correct format?

Answer 1

This should work:
(A space before the > < signs)
$day_start = date('Y-m-d 00:00:00', $day);
$day_end = date('Y-m-d 23:59:59', $day);
return $this->db->select('*')
->from('ea_appointments,ea_services,ea_users')
->where('ea_appointments.id_users_customer','ea_users.id')
->where('ea_appointments.id_services','ea_services.id')
->where('ea_appointments.start_datetime >',$day_start)
->where('ea_appointments.start_datetime <',$day_end)
->get()->result();

Answer 2

Assuming your original sql function works as you intended it before you tried to recreate it in codeigniter, You can simply do this.
$day_start = date('Y-m-d 00:00:00', $day);
$day_end = date('Y-m-d 23:59:59', $day);
$query = $this->db->query(SELECT *
FROM (ea_users, ea_appointments, ea_services)
WHERE ea_appointments.id_users_customer = ea_users.id
AND ea_appointments.id_services = ea_services.id
AND ea_appointments.start_datetime > {$day_start}
AND ea_appointments.start_datetime < {$day_end});
$query->result();

Answer 3

This worked:
$day_start = date('Y-m-d 00:00:00', $day);
$day_end = date('Y-m-d 23:59:59', $day);
return $this->db->select('ea_appointments.id,
ea_appointments.start_datetime,
ea_appointments.end_datetime,
ea_users.email,
ea_services.name')
->from('ea_appointments')
->join('ea_users', 'ea_appointments.id_users_customer = ea_users.id','left')
->join('ea_services', 'ea_appointments.id_services = ea_services.id','left')
->where('ea_appointments.start_datetime >',$day_start)
->where('ea_appointments.start_datetime <',$day_end)
->get()->result();
Join statements did the trick.