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I keep getting a "data type mismatch in criteria expression" error

Posted on 2008-06-16
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Last Modified: 2013-11-27
I have a query in Access that uses a function to get the month and year from a date field. I pasted the query below. I checked the data type in the table it is querying, and the field is definitely Date/Time

The VBA function is simply;

Public Function GetQNMonthandYear(TheDate As Date)

GetQNMonthandYear = Year([TheDate]) & "-" & Month([TheDate])

End Function
SELECT Format(GetQNMonthandYear([Created On]),"yyyy-mm") AS MonthandYear, Sum(KO_QN_Data.[DefectQty (ext)]) AS Total_QNs
FROM KO_QN_Data
WHERE GetQNMonthandYear([Created on])>='12/30/2005' And (KO_QN_Data.[Name 1]="KO-Borden" OR KO_QN_Data.[Name 1]="flexcel-Borden" OR KO_QN_Data.[Name 1]="flexcel-Salem" OR KO_QN_Data.[Name 1]="KO-Salem" OR (KO_QN_Data.[Name 1]="KO-Jasper 15th Street" OR KO_QN_Data.[Name 1]="flexcel-Jasper 15th Street") And GetFifteenthPlant([Product hierarchy])="Wood Plant") AND GetBucket([Code group])="Product"
GROUP BY Format(GetQNMonthandYear([Created On]),"yyyy-mm")
ORDER BY Format(GetQNMonthandYear([Created On]),"yyyy-mm");

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Question by:Rex85
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4 Comments
 
LVL 43

Expert Comment

by:TimCottee
ID: 21793304
Hello Rex85,

You don't need to apply the format to the returned value as it is already formatted!

   SELECT GetQNMonthandYear([Created On]) AS MonthandYear, Sum(KO_QN_Data.[DefectQty (ext)]) AS Total_QNs
   FROM KO_QN_Data
   WHERE GetQNMonthandYear([Created on])>='2005-12' And (KO_QN_Data.[Name 1]="KO-Borden" OR KO_QN_Data.[Name 1]="flexcel-Borden" OR KO_QN_Data.[Name 1]="flexcel-Salem" OR KO_QN_Data.[Name 1]="KO-Salem" OR (KO_QN_Data.[Name 1]="KO-Jasper 15th Street" OR KO_QN_Data.[Name 1]="flexcel-Jasper 15th Street") And GetFifteenthPlant([Product hierarchy])="Wood Plant") AND GetBucket([Code group])="Product"
   GROUP BY GetQNMonthandYear([Created On])
   ORDER BY GetQNMonthandYear([Created On]);

Regards,

TimCottee
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LVL 120

Accepted Solution

by:
Rey Obrero (Capricorn1) earned 500 total points
ID: 21793354
you don't have to use a UDF function to get year month

just use format

SELECT Format([Created On],"yyyy-mm") AS MonthandYear, Sum(KO_QN_Data.[DefectQty (ext)]) AS Total_QNs
FROM KO_QN_Data
WHERE Format([Created On],"yyyy-mm")>='2005-12' And (KO_QN_Data.[Name 1]="KO-Borden" OR KO_QN_Data.[Name 1]="flexcel-Borden" OR KO_QN_Data.[Name 1]="flexcel-Salem" OR KO_QN_Data.[Name 1]="KO-Salem" OR (KO_QN_Data.[Name 1]="KO-Jasper 15th Street" OR KO_QN_Data.[Name 1]="flexcel-Jasper 15th Street") And GetFifteenthPlant([Product hierarchy])="Wood Plant") AND GetBucket([Code group])="Product"
GROUP BY Format([Created On],"yyyy-mm")
ORDER BY Format([Created On],"yyyy-mm");


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Author Closing Comment

by:Rex85
ID: 31467580
Thanks very much. That did it.
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Author Comment

by:Rex85
ID: 21793431
Tim:

Thanks for the help. I tried your solution, but I got the same error message. It must have been in the function. Eliminating it like capricorn1 suggested solved it.

Rex
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