How to show open sales orders

Question

hello All
I want to show a report of all sales orders that has been converted to invoices. (the sales order and invoice document numbers)
Also, if they have been partially converted to invoices(so still open), it must show these sales orders as well.
All Sales Orders that has been converted to Invoices(so closed status) as well as Sales Orders that are still open but has been partially converted to invoices.
This is my query thus far :
with openorders as
SELECT DISTINCT T0.DocNum as 'Sales Order #', T0.DocDate as 'Order Date',
T0.CardName as 'Customer Name',
T0.DocTotal -T0.VatSum as 'Excl. VAT', T0.VatSum as 'VAT',
T0.DocTotal as 'Total', 
t0.docdate as 'Inv Date', T0.DocNum as 'Inv #','NULL' as 'Numatcard',  T0.DocTotal -T0.VatSum 'Total Ex VAT',
T0.VatSum as 'Inv VAT', T0.DocTotal as 'INV TOT', 'NO INVOICE' as 'Slpname',t0.Comments as 'Comments'
FROM ORDR T0 INNER JOIN RDR1 T1 ON T0.DocEntry = T1.DocEntry
WHERE T1.[TrgetEntry]  is null
OrdersInv as
SELECT DISTINCT T0.DocNum as 'Sales Order #', T0.DocDate as 'Order Date',
T0.CardName as 'Customer Name',
T0.DocTotal -T0.VatSum as 'Excl. VAT',
T0.VatSum as 'VAT', T0.DocTotal as 'Total', 
T2.DocDate as 'Inv Date',
T2.DocNum as 'Inv #',
T2.NumAtCard,
T2.DocTotal -T2.VatSum as 'Inv Excl. VAT',
T2.VatSum as 'Inv VAT',
T2.DocTotal as 'Inv Total',
T4.SlpName,
T2.Comments
FROM ORDR T0 INNER JOIN RDR1 T1 ON T0.DocEntry = T1.DocEntry
INNER JOIN OINV T2 ON T2.DocEntry = T1.TrgetEntry
INNER JOIN OSLP T4 ON T2.SlpCode = T4.SlpCode
select *
from OrdersInv union all
select * from openorders

Answer 1

TrgetEntry will not always work, sometimes it is null even if an order has been copied to an invoice.
This is a simple version of the query, you will need to expand it for your needs:
SELECT DocEntry FROM ORDR WHERE DocEntry in (SELECT Distinct BaseEntry FROM INV1 WHERE BaseType = 17)