Distinct on a right/left inner join

Hi,

I've got the need to select everything from table1 and only 1 row from table2. Table2 can hold any number of rows from 0 to 10,000

I've tried the following with no joy. Any ideas?

SELECT DISTINCT (ID) AS Expr1, *
FROM aacc LEFT JOIN awardsQuery ON aacc.ID = tbl2.feildID;

This still brings back IDs that are the same!

Regards
LVL 2
devaidAsked:
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1makCommented:
The DISTINCT keyword acts on all of the fields returned, not just the first one (i.e. ID in your example).

If you were to explicitly name only the fields you wanted then i'm sure you'd get a better result.
e.g.
      SELECT DISTINCT      aacc.ID,
                  awardsQuery.Field1
      FROM            aacc
          LEFT JOIN      awardsQuery ON aacc.ID = awardsQuery.FieldID


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devaidAuthor Commented:
Still returns duplicate rows
0
YZlatCommented:
try this:

strSQL="SELECT DISTINCT ID FROM aacc LEFT JOIN awardsQuery ON aacc.ID = tbl2.feildID;"

set db=CurrentFB
set rst=db.Execute(strSQL)

if not (rst.eof and rst.bof) then
      Do while not rst.eof
            strSQL="SELECT * FROM aacc LEFT JOIN awardsQuery ON aacc.ID = tbl2.feildID AND ID = " & rst("ID") & ";"
            set rst2=db.execute(strSQL)
            if not (rst2.eof and rst2.bof) then

            ...............

            'YOUR CODE HERE
            end if
             rst.MoveNext
      Loop
end if
      


      
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YZlatCommented:
sorry

strSQL="SELECT DISTINCT ID FROM aacc LEFT JOIN awardsQuery ON aacc.ID = tbl2.feildID;"

set db=CurrentFB
set rst=db.Execute(strSQL)

if not (rst.eof and rst.bof) then
     Do while not rst.eof
          strSQL="SELECT * FROM aacc LEFT JOIN awardsQuery ON aacc.ID = tbl2.feildID AND ID = " & rst("ID") & ";"
          set rst2=db.execute(strSQL)
          if not (rst2.eof and rst2.bof) then
      Do while not rst2.eof
                      'YOUR CODE HERE
            .............................


            rst2.Movenext
      Loop
          end if
           rst.MoveNext
     Loop
end if
     


0
BigSchmuhCommented:
There is a way to do this without any code scripting using a simple GROUP BY clause but you need to have a combination of columns in awardsQuery that are unique.
Below, I assume that you have an ID field in awardsQuery that is unique but you can do the same with a multi-columns unique key.

SELECT aacc.*, awardsQuery.*
FROM aacc
 LEFT JOIN (SELECT fieldID, Min(ID) As MinID
                  FROM awardsQuery
                  GROUP BY fieldID) LowestID ON LowestID.fieldID = aacc.ID
 LEFT JOIN awardsQuery on LowestID.ID = awardsQuery.ID

Please note that if aacc.ID is NOT unique you should add the DISTINCT keyword after the first SELECT

Hope this helps.
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gajender_99Commented:
hi try this

SELECT DISTINCT aacc.ID AS Expr1,tbl2. *
FROM aacc LEFT JOIN tbl2 ON aacc.ID = tbl2.feildID;

this should solve you problem
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BigSchmuhCommented:
gajender_99:
==> You are welcomed to read others posts as "1mak" already post the same non-working solution.
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