ASP Syntax - missing operator

Posted on 2014-01-23
Last Modified: 2014-01-23
Frustrating day today, I can't seem to find any of my errors.  Can someone assist please?

mySQL3 = "UPDATE inventory SET quantity = currentqtyminus1 WHERE [productname] = " & Request.Form("productname")

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Microsoft OLE DB Provider for ODBC Drivers error '80040e14'
[Microsoft][ODBC Microsoft Access Driver] Syntax error (missing operator) in query expression '[productname] = Test Product'.
/triplels/insertDBsale.asp, line 64
Question by:bschwarting
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LVL 33

Expert Comment

by:Big Monty
ID: 39804954
mySQL3 = "UPDATE inventory SET quantity = currentqtyminus1 WHERE [productname] = '" & Request.Form("productname") & "'"

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if you had looked at and tried to implement my code with parameterized queries from your last post, you would not be having these problems
LVL 33

Accepted Solution

Big Monty earned 500 total points
ID: 39804958
and if currentqtyminus1 is a asp local variable and not a column in your database, it would be:

mySQL3 = "UPDATE inventory SET quantity = " & currentqtyminus1 & " WHERE [productname] = '" & Request.Form("productname") & "'"

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LVL 143

Expert Comment

by:Guy Hengel [angelIII / a3]
ID: 39804966
and to protect against sql injection:
mySQL3 = "UPDATE inventory SET quantity = currentqtyminus1 WHERE [productname] = '" & replace(Request.Form("productname"), "'", "''") & "'" 

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LVL 58

Expert Comment

ID: 39804978
No points for this as Monty has answered the question but...
If you are just decreasing the quantity by 1 every time you can do

mySQL3 = "UPDATE inventory SET quantity =quantity -1  WHERE [productname] = '" & Request.Form("productname") & "'"

Author Comment

ID: 39805024
thanks so much all!

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