If you don't have memo fileds in the table, following should work

SELECT DIST * FROM (
  SELECT Orders.*, tot.TOTAMT ;
    FROM Orders ;
      JOIN (SELECT OrdNbr, SUM(AMT) AS TOTAMT FROM Orders GROUP BY OrdNbr) tot ;
    ON tot.OrdNbr = Orders.OrdNbr
) dt1

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>Unfortunately, I don't seem to be getting the results I expect. I still get one record for every original record I selected from "Orders", with the total column added at the end.
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>What I'm looking for, and get with 70, is that I get one record for each unique OrdNbr in "Orders", with the total column added at the end. Thus, I get the same number or records as you obtained within your sub-query. It looks like the JOIN you suggested each of the records from my original table with the single row from the sub-query; I want one row (and I don't care which one) from the original table for each row in the sub-query.
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