Hi Rex
I just tried the same process with a random table and that works.
Can you try packing the table? I have sometimes seen issues with unpacked tables - not sure it was with Combine Using Column though.
Are any of your columns indexed? Does it work by removing the index?
Would you be able to share your table? If you prefer, you can send it to peter.moller@precisely.com.
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Peter Horsbøll Møller
Principal Presales Consultant | Distinguished Engineer
Precisely | Trust in Data
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