Question

I have following code

$criteria=new CDbCriteria;
$criteria->with = array('owner'=>array('select'=>array('*','payment_info'=>'payment_account')));

which works fine, but when i add concat into it

$criteria->with = array('owner'=>array('select'=>array('*','payment_info'=>'concat(payment_account)')));

it throws me an error

Active record "User" is trying to select an invalid column "concat(payment_account)". Note, the column must exist in the table or be an expression with alias. 

how to provide alias for it?

Answer 1

Try giving it an alias, like:

$criteria->with = array('owner'=> array('select'=> array('*','payment_info'=>'concat(payment_account) as conc')));

I’ve used that method without a problem before.