Group by problem

From: Csillag Zsolt <starsoft_at_interware.hu>
Date: Fri, 05 Oct 2001 10:01:34 -0700
Message-ID: <F001.003A3A42.20011005095029@fatcity.com>

Hi,

If I have the following query:

Select a.column1, count(*)

from a, b

where a.column2 = b.column2

It works correctly, it displays the correct number in the count.

However there are records that don't meet the criteria 'where a.column2 = b.column2'

So I modified the query:

Select a.column1, count(*)

from a, b

where a.column2 = b.column2(+)

Now with (+) it displays every record, but the problem is that in case there is no relation, the count displays 1 instead of 0. In other cases it is good.

But I can't decide from the program if it's 1 because it had 1 relation in table b, or 1 because it hadn't
got any relation.

Can you help me work around this problem?

Thank you

Zsolt Csillag
Hungary

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Author: Csillag Zsolt
  INET: starsoft_at_interware.hu

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