How to add sku column in sales order grid magento admin
Note: For not to override magento core functionality, You can create your own module and use the below code in Grid.php
Open app\code\core\Mage\Adminhtml\Block\Sales\Order\Grid.php
Replace the below function
protected function _prepareCollection()
{
$collection = Mage::getResourceModel($this->_getCollectionClass());
$collection->getSelect()->joinLeft(
'sales_flat_order_item',
'`sales_flat_order_item`.order_id=`main_table`.entity_id',
array('skus' => new Zend_Db_Expr('group_concat(`sales_flat_order_item`.sku SEPARATOR ",")'))
);
$collection->getSelect()->group('entity_id');
$this->setCollection($collection);
return parent::_prepareCollection();
}
Now put the below code in _prepareColumns() function
$this->addColumn('sku', array(
'header' => Mage::helper('sales')->__('SKU'),
'index' => 'skus',
'type' => 'text',
'width' => '100px',
'filter' => false,
));