Magento resource: custom selects with OR in where (select orders by status) - sql

Question

I'm building a custom module and i'm trying get all orders with specific status:
$canceledQuery = Mage::getSingleton('core/resource')->getConnection('core_read')->select()
->from('mage_sales_flat_order', 'entity_id')
->where('status = ?', 'canceled');
This works very well. But now i'm trying use OR in where, without success.
I have been try this:
$whereCanceled = array();
foreach ($_status as $statusCode => $value) {
$whereCanceled[] = sprintf('%s=:%s', 'status', $statusCode);
}
$ordersQuery = Mage::getSingleton('core/resource')->getConnection('core_read')->select()
->from('mage_sales_flat_order', 'entity_id')
->where(implode(' OR ', $whereCanceled));
So, I don't know how use OR right in this case. I found no use for this with OR. Any idea?

Answer 1

instead of implode use join. magento use join itself.
->where(join(' OR ', $orWhere));//$orWhere array of condition
you can see in below function magento use join for OR condition in where clause
public function getSystemConfigByPathsAndTemplateId($paths, $templateId)
{
$orWhere = array();
$pathesCounter = 1;
$bind = array();
foreach ($paths as $path) {
$pathAlias = 'path_' . $pathesCounter;
$orWhere[] = 'path = :' . $pathAlias;
$bind[$pathAlias] = $path;
$pathesCounter++;
}
$bind['template_id'] = $templateId;
$select = $this->_getReadAdapter()->select()
->from($this->getTable('core/config_data'), array('scope', 'scope_id', 'path'))
->where('value LIKE :template_id')
->where(join(' OR ', $orWhere));
return $this->_getReadAdapter()->fetchAll($select, $bind);
}
for more reference open file located at [magento]/app/code/core/Mage/Core/Model/Resource/Email/Template.php
Hope this help you