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Can I do this as a distinct selection?

order number trans

12345 001
12345 AAA
12345 BBB
12345 PWB
12345 CCC
12345 PWB

In the program, we are reading the order history, We join with those order
numbers which have an '001' above. Now we also want to display the PWB
code.

But, we only want to display that one time. currently the program is
including all occurances so there is an extra line.

I am thinking of creating logical view that would contain 001 and pwb only.
but how to remove the extra pwb rec?

I am thinking with a select distinct on ordernumber and trans.
can this be done?

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