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Very complicated syntax

Posted on 2014-11-28
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Last Modified: 2014-11-28
Can someone help me with this syntax?

=DSum("[QTY_ORDERED]","tblInventory","[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND [TRNX_TYPE] in ('I','O')") + (DSum("QTY_ORDERED]","tblInventory","[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND IsNull([TRNX_TYPE]) - DSum("QTY_ORDERED]","tblInventory","[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND IsNotNull([DATE_RECD]))

I probably have a lot wrong with it.
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Question by:SteveL13
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8 Comments
 
LVL 51

Expert Comment

by:Gustav Brock
ID: 40470579
Try this:

=DSum("[QTY_ORDERED]","tblInventory",
"[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND [TRNX_TYPE] in ('I','O')") +
(DSum("QTY_ORDERED]","tblInventory",
"[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND [TRNX_TYPE] Is Null") -
DSum("QTY_ORDERED]","tblInventory",
"[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND [DATE_RECD] Is Not Null")

/gustav
0
 

Author Comment

by:SteveL13
ID: 40470591
Am getting a #Error in the field on the form.

But when I copy/pasted your suggestion into the control source it didn't complain except that it wanted a ) at the end.
0
 
LVL 51

Expert Comment

by:Gustav Brock
ID: 40470609
Oh, sorry, but it's the other way round (line 3):

=DSum("[QTY_ORDERED]","tblInventory",
 "[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND [TRNX_TYPE] in ('I','O')") +
DSum("QTY_ORDERED]","tblInventory",
 "[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND [TRNX_TYPE] Is Null") -
DSum("QTY_ORDERED]","tblInventory",
 "[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND [DATE_RECD] Is Not Null")

/gustav
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Author Comment

by:SteveL13
ID: 40470633
Hmmm,

I tried picking this apart in sections.  When I cop/pasted the first part it gave me a result:

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

But when I tried the 2nd part by itself:

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

I get #Error in the field.
0
 
LVL 51

Accepted Solution

by:
Gustav Brock earned 2000 total points
ID: 40470642
You should correct the typo:

=DSum("[QTY_ORDERED]"

also for the third part.

/gustav
0
 

Author Closing Comment

by:SteveL13
ID: 40470693
Perfect!
0
 
LVL 51

Expert Comment

by:Gustav Brock
ID: 40470695
Also, you may need to prevent Nulls:

=Nz(DSum("[QTY_ORDERED]","tblInventory",
  "[PART_NO] = '" & [Forms]![frmParts]![txtPART_NO] & "' AND [TRNX_TYPE] in ('I','O')"), 0)

for all three parts.

/gustav
0
 

Author Comment

by:SteveL13
ID: 40470748
Ok.  Will do.
0

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