How would I construct this query using Zend_Db_Select?
:
SELECT users.user_id, email_address, t1.value as 'languages'
FROM users
LEFT JOIN (
SELECT
user_id
, field_id
, GROUP_CONCAT(value SEPARATOR ',') AS value
FROM user_multivalued
WHERE field_id=25
GROUP BY user_id, field_id) t1
ON t1.user_id = users.users_id
WHERE list_id = 45
$user_multivalued = $db
->select()
->from('user_multivalued', array(
'user_id',
'field_id',
new Zend_Db_Expr("GROUP_CONCAT(value SEPARATOR ',') AS value")
))
->where('field = ?', 25)
->group('user_id')
->group('field_id')
;
$select = $db
->select()
->from('users', array('user_id', 'email_address'))
->joinLeft(
array('t1' => $user_multivalued),
't1.user_id = users.user_id',
array('languages'=>'value')
)
->where('list_id = ?', 45)
;