Problem with Expression in DataColumn

  • Thread starter Thread starter Carl
  • Start date Start date
C

Carl

Hi,

I get errors when I try the following expression in my strongly typed
dataset:

"Sum(Parent.Child(Relation1).Value)"

The error I get is:

"Syntax error in aggregate argument: Expecting a single column argument with
possible 'Child' qualifier."

What I want to do is to navigate from the current row to its parent, and
then use one of the parents child relations to do a sum. It seems like
navigating more than one step is not supported. Can this be true?

regards

Carl
 
Hi Carl,

As you see, I'm afraid this is true. The express column doesn't support
navigate the column more than one step. I think you may add a special
express column (Sum(Child(Relation1).Value) in the parent table and then
navigate to it from the child table(Parent.specialColumn).

Hope this helps.
Sincerely,
Wen Yuan
Microsoft Online Community Support
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