Filtering a joined column

Question

I am creating a stock report in the admin and have everything working so far, except that I can\'t seem to be able to filter on the joined column.

I have joined the stoc

Answer 1

After join simply use order to sort your result

$collection->getSelect()
    ->join( array('stock'=>'ccmg_cataloginventory_stock_item'), 'e.entity_id = stock.item_id', array('stock.qty'))
    ->order('stock.qty ASC');