Laravel how to Query Rows by Column in Eloquent

Question

In Laravel, I can get the rows from a selected column in MySQL by a Laravel query.

$data = DB::query('select engagements from csv2');

However, I wonder how can I write this using Eloquent?

Answer 1

$data = Model::get(array('engagements'));

例如，如果我只想为用户收到电子邮件;

$email = User::get(array('email'));

Answer 2

Egill's answer works, however I find the below more readable.

$email = User::select('email')->get();

And for your follow up question.

Can i query rows that only has value on it

 $email = User::select('email')
    ->where('email', '!=', '')
    ->get();