DCount Syntax

Patrick O'Dea
Patrick O'Dea used Ask the Experts™
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Hi,

Table is tblOrders
Field Name is CustomerNumber

I want to display the number of times a CUSTOMER has placed an order.

So, if I am looking at a form that displays a single order for CUSTOMER 888 - I want the form to display that this CUSTOMER has 999 Orders already.

Each time an order is displayed on the screen , then there should also be a display of the total number of orders placed by that customer.

What's the DCOUNT format??

Thanks!
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Try this:

=DCount("[CustomerNumber]", "tblOrders", "[CustomerNumber] = 888")

Sincerely,

Ed
Most Valuable Expert 2012
Top Expert 2014

Commented:
Without knowing your table structure it's hard to give exact syntax, but assuming you have an Orders table, with a field named Customer, then something like:

Nz(DCount("IDField", "Orders", "Customer=" & Me.Customer),0)

If "Customer" is a Text field:

Nz(DCount("IDField", "Orders", "Customer='" & Me.Customer & "'"),0)

This would tell you the number of orders EVER placed by the customer.

"IDFIeld" is any field in the table, although it's generally better to use an indexed field. If you have an Autonumber field in the table  use that.
Most Valuable Expert 2012
Top Expert 2014
Commented:
Note that you'd want to do this on the Form's Current event, so something like this:

Sub Form_Current()
  Me.YourControl = Nz(DCount("IDField", "Orders", "Customer='" & Me.Customer & "'"),0)
End Sub

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Commented:
Thanks!

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