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2004-07-02, 07:54 #1
- Join Date
- Jan 2001
- Alzano Lombardo, Italy
- Thanked 0 Times in 0 Posts
Summing field values from joined tables in a query (2000)
How come the query shown below(Query6 in the attached mdb) gives me correct results if I leave out the green part while all the values are multiplied by 4 if I leave the green part in?
SELECT Gorlago.Data, Sum(Gorlago.Field4) AS SumOfField4, Sum(Gorlago.Field6) AS SumOfField6, <font color=448800>Sum(Songavazzo.Field4) AS SumOfField41, Sum(Songavazzo.Field6) AS SumOfField61,</font color=448800> Gorlago.Hour
FROM Gorlago <font color=448800>INNER JOIN Songavazzo ON (Gorlago.Data = Songavazzo.Data) AND (Gorlago.Hour = Songavazzo.Hour)</font color=448800>
GROUP BY Gorlago.Data, Gorlago.Hour;
2004-07-02, 08:29 #2
- Join Date
- Mar 2002
- Thanked 29 Times in 29 Posts
Re: Summing field values from joined tables in a query (2000)
There are 4 records for each hour in both Gorlago and Songavazzo. In Query 6, one record for a specific hour in Gorlago is combined with each of the 4 records for that hour in Songavazzo.
You should create a query that sums Field4 and Field6 per Data and Hour for Gorlago, and another query that does the same for Songavazzo. Then create a third query that joins them.