Question

I am using mssql and am having trouble using a subquery. The real query is quite complicated, but it has the same structure as this:

select    customerName,    customerId,   (     select count(*)      from Purchases      where Purchases.customerId=customerData.customerId   ) as numberTransactions from customerData 

And what I want to do is order the table by the number of transactions, but when I use

order by numberTransactions 

It tells me there is no such field. Is it possible to do this? Should I be using some sort of special keyword, such as this, or self?

Answer 1

use the field number, in this case:

order by 3