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Revise DSum syntax

Posted on 2014-11-24
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Last Modified: 2014-11-24
I have the following DSum syntax for the control source of a field on a form.  But I need to change it,  Here is the current code:

=DSum("[QTY_ORDERED]","tblInventory","[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "'")

But I need to add two qualifiers to it.

Where TRNX_TYPE = "I" or "O"
How can I change this control source?

I tried:

=DSum("[QTY_ORDERED]","tblInventory","[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "'" WHERE [TRNX_TYPE] = "I" or "O")

but it isn't right.
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Question by:SteveL13
3 Comments
 
LVL 34

Assisted Solution

by:PatHartman
PatHartman earned 250 total points
ID: 40463049
=DSum("[QTY_ORDERED]","tblInventory","[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "'" WHERE [TRNX_TYPE] = "I" or [TRNX_TYPE] = "O")

You have to repeat the operand.
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LVL 49

Accepted Solution

by:
Gustav Brock earned 250 total points
ID: 40463216
It's also your (missing) single/double quotes:

=DSum("[QTY_ORDERED]","tblInventory","[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' And [TRNX_TYPE] = 'I' or [TRNX_TYPE] = 'O'")

/gustav
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Author Closing Comment

by:SteveL13
ID: 40463224
Thank you to both of you.
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