Re: Select DISTINCT question

From: Rachel Carmichael <wisernet100_at_yahoo.com>
Date: Wed, 06 Feb 2002 08:34:20 -0800
Message-ID: <F001.00407455.20020206074330@fatcity.com>

The second one does not make sense. Group by is normally used when you are including a function that would return a single value (like sum or count) and yet want to have more than one row returned because you are including a column that is not within the function

so 1 is definitely more correct

• "Seefelt, Beth" <Beth.Seefelt_at_TetleyUSA.com> wrote:
  >
  > Hi everyone,
  >
  > Is one of these more correct than the other ?
  >
  > 1) select distinct customer_number, address_code from orders;
  >
  > 2) select customer_number, address_code
  > from orders
  > group by customer_number,address_code;
  >
  >
  > Our developers do the 1st one mostly. It always bothers me, I'm not
  > sure why, I guess I just think of it as looking ambiguous even though
  > it
  > does return the same result as the second option.
  >
  > Any opinions? Does it matter at all?
  >
  > TIA,
  >
  > Beth
  >
  

  ---

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Author: Rachel Carmichael
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Received on Wed Feb 06 2002 - 10:34:20 CST