Magento sql query ayuda necesaria con consulta masiva

estamos haciendo algunos informes similares. Lo que tienes que hacer:

• Empezar desde el producto simple
• ÚNETE sobre la tabla catalog_product_super_link en el producto configurable
• En la parte SELECCIONAR de la consulta, use IF => si el valor del producto simple está allí, úselo, de lo contrario use el valor del producto configurable (o al revés)

Ejemplo

SELECT
    o.increment_id,    
    oi.order_id,
    o.STATUS AS order_status,
    o.created_at,                  
    ROUND(SUM(IF(oi2.qty_ordered IS NOT NULL, IF(oi2.qty_ordered > oi.qty_ordered, oi2.qty_ordered, oi.qty_ordered), oi.qty_ordered)), 0) AS cqty_ordered,
    ROUND(SUM(IF(oi2.qty_canceled IS NOT NULL, IF(oi2.qty_canceled > oi.qty_canceled, oi2.qty_canceled, oi.qty_canceled), oi.qty_canceled)), 0) AS cqty_canceled,
    ROUND(SUM(IF(oi2.qty_shipped IS NOT NULL, IF(oi2.qty_shipped > oi.qty_shipped, oi2.qty_shipped, oi.qty_shipped), oi.qty_shipped)), 0) AS cqty_shipped,
    ROUND(SUM(IF(oi2.qty_ordered IS NOT NULL, IF(oi2.qty_ordered > oi.qty_ordered, oi2.qty_ordered, oi.qty_ordered), oi.qty_ordered)) - SUM(IF(oi2.qty_canceled IS NOT NULL, IF(oi2.qty_canceled > oi.qty_canceled, oi2.qty_canceled, oi.qty_canceled), oi.qty_canceled)) - SUM(IF(oi2.qty_shipped IS NOT NULL, IF(oi2.qty_shipped > oi.qty_shipped, oi2.qty_shipped, oi.qty_shipped), oi.qty_shipped)), 0) AS cqty_missing
FROM sales_flat_order_item AS oi
INNER JOIN sales_flat_order AS o ON oi.order_id=o.entity_id
LEFT JOIN sales_flat_order_item AS oi2 ON oi.parent_item_id=oi2.item_id AND oi2.product_type='configurable'
WHERE oi.product_type='simple'
GROUP BY oi.order_id
HAVING cqty_missing=0 AND order_status NOT IN ('complete','canceled','closed');