Error when creating a virtual field inside a model - php

Question

I'm having a hard time setting up a virtual field in one of my model. I've been setting virtualfields like this in all of my models without any issue. However, for some reason I can't figure out, it's not working at all in this model.
Error:
SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'databases WHERE id = `DataSourceName`.`database_id`) AS `DataSourceName__databa' at line 1
Model:
<?php
App::uses('AppModel', 'Model');
/**
* DataSourceName Model
*
* #property Database $Database
*/
class DataSourceName extends AppModel {
public $virtualFields = array(
'database' => 'SELECT name FROM databases WHERE id = DataSourceName.database_id',
);
//The Associations below have been created with all possible keys, those that are not needed can be removed
/**
* belongsTo associations
*
* #var array
*/
public $belongsTo = array(
'Database' => array(
'className' => 'Database',
'foreignKey' => 'database_id',
'conditions' => '',
'fields' => '',
'order' => ''
)
);
}
SQL:
CREATE TABLE IF NOT EXISTS data_source_names(
id INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
name VARCHAR(255) DEFAULT NULL,
description VARCHAR(255) DEFAULT NULL,
database_id INT(10) UNSIGNED DEFAULT NULL,
created DATETIME DEFAULT NULL,
modified DATETIME DEFAULT NULL,
created_by INT(10) UNSIGNED DEFAULT NULL,
modified_by INT(10) UNSIGNED DEFAULT NULL,
PRIMARY KEY (id)
)
ENGINE = INNODB
AUTO_INCREMENT = 1
CHARACTER SET utf8
COLLATE utf8_unicode_ci;
Update 1
SQL failing:
(SELECT name FROM databases WHERE id = `DataSourceName`.`database_id`) AS `DataSourceName__database`

Answer 1

Here's what I ended up using for the SQL:
SELECT name FROM my_db.databases WHERE id = `DataSourceName`.`database_id`
Note the database name prefix (ie. my_db) in front of the table databases. Probably due to databases being a reserved word.
Final Model:
<?php
App::uses('AppModel', 'Model');
/**
* DataSourceName Model
*
* #property Database $Database
*/
class DataSourceName extends AppModel {
public function __construct($id = false, $table = null, $ds = null) {
parent::__construct($id, $table, $ds);
$fields = get_class_vars('DATABASE_CONFIG');
$this->virtualFields['database'] = sprintf(
'SELECT name FROM %s.databases WHERE id = DataSourceName.database_id', $fields['default']['database']
);
}
//The Associations below have been created with all possible keys, those that are not needed can be removed
/**
* belongsTo associations
*
* #var array
*/
public $belongsTo = array(
'Database' => array(
'className' => 'Database',
'foreignKey' => 'database_id',
'conditions' => '',
'fields' => '',
'order' => ''
)
);
}