How can I combine two queries I would like to combine these queries:

UPDATE T1
SET Opening_date = T2.Opening_date
FROM FactTransaction T1
INNER JOIN DimStore T2 ON T1.cod_Store = T2.Cod_StoreKey


and 

UPDATE FactTransaction
SET ORDINAL = DATEDIFF(DAY, Opening_Date, DATE)


In order to avoid insert the field Opening_date in my fact table. I don't know how to do it just with a query.
UPDATE T1 SET 
Opening_date = T2.Opening_date, 
ORDINAL = DATEDIFF(DAY, T2.Opening_Date, T1.DATE) 
FROM FactTransaction T1 
INNER JOIN DimStore T2 ON T1.cod_Store = T2.Cod_StoreKey;


...if I understand you correctly.

Edit: Ok, just go with:

UPDATE T1 SET 
ORDINAL = DATEDIFF(DAY, T2.Opening_Date, T1.DATE) 
FROM FactTransaction T1 
INNER JOIN DimStore T2 ON T1.cod_Store = T2.Cod_StoreKey;