Sum query: Data type mismatch in criteria expression

[igor.barbaric]

Hello!
I have created a very simple query like this:

SELECT Tasks.Name, DurationHrs([Log.DateTimeFrom],[Log.DateTimeTo]) AS
Duration
FROM Tasks INNER JOIN Log ON Tasks.TaskID=Log.TaskID;

The above query works fine. "Tasks.Name" is a "Text" field with
description of task, while "DurationHrs" is a VB function that
calculates number of hours between two "DateTime" values and returns
result of type "Single".

However, when I try to sum these hours of type "Single" in a query like
this:

SELECT Tasks.Name,
Sum(DurationHrs([Log.DateTimeFrom],[Log.DateTimeTo])) AS Duration
FROM Tasks INNER JOIN Log ON Tasks.TaskID = Log.TaskID
GROUP BY Tasks.Name;

.... I get an error "Data type mismatch in criteria expression. (Error
3464)".

What could possibly be wrong?
Thanks in advance!
Kind regards,
Igor

 

[Allen Browne]

Igor you have posted this twice in another group and 3 times here.

This is clearly intentional (subject lines are different), so it looks like
you are trying to annoy everyone.

I am sorry I answered your post in comp.databases.ms-access, and will try
not to give you answers in future.