Select Rows Once That Do Not Exist Twice In Same Table

Dec 6, 2007



Hi,

I have a table of row IDs, order numbers, and status. Status is a value of 1 or 2. Some rows only exist as a 1, some only as a 2, and some exist twice -- once as 1 and once as 2. I want to select orders that are 2 as well as rows that are 1 but do not also exist in the table as 2. Ultimately I will only see each order number once. Is there a better/faster way than doing multiple selects and comparing them to each other?

Example data:

RowID OrderNum Status
1 101 1
2 102 1
3 102 2
4 103 2

Desired results when selecting ID and ordernum from that table:
1 101
3 102
4 103

Thanks.

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