Surcharges that were not invoiced

Question

I have a table named INVOICES. I want to select all the invoice numbers where a certain charge code is missing. I kindly ask your help to help me out with this. All I need is something like :

Select * from Invoices where (Invoices.chargecode="FREIGHT" is not present) 

An invoice can have many charge lines but all I need to know is all those invoices user forgot to charge "FREIGHT" which cannot happen.

Many thanks. Paul

Answer 1

Will this work for you? Assuming Invoices has an ID column which you can replace in this code:

SELECT * FROM Invoices WHERE InvoiceID NOT IN
(SELECT InvoiceID FROM Invoices WHERE chargecode = 'FREIGHT')