Hi

You could mark your data and choose DataFilterAutofilter
Use dropdown on Customer ID and you will see a filtered list of their
Invoice numbers.

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Regards

Roger Govier


"pellepannekake" wrote in
message ...
Hi, I have this list;
customer id invoice no.
300100 123
300100 456
300200 654

My question is; which invoices do customer 300100 have?
I want answer; no. 123 and 456.
How can I use Lookup to give me this result?




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Best regards Pellepannekake