I'm building a query like this in VBA strValues = strValues & ", " & _ "=" &! Problem is, the date field can sometimes be blank, and if it is I'm getting an expression error when it's . If you are in Access use the nz function. and examples. The Microsoft Access Nz function lets you return a value when a variant is null. The Nz function can be used in VBA code in Microsoft Access. Join Date: Apr Nz() function works in Access queries. When I try to import data via these queries into Excel, it says: Nz is not recognized. . Need help w/ function that opens Excel. ssmith, Modules & VBA, 2.
nbsp; Nz(DateOfBirth, Date), Date) + (Date < DateSerial(Year(Date), _ Remember, in VBA the IIf statement evaluates BOTH the True and. and examples. The Microsoft Access Nz function lets you return a value when a variant is null. The Nz function can be used in VBA code in Microsoft Access. SQL statement in VBA - not recognising the 'Nz' function (XL) And I can't add my own query, with the date references removed, either.
I'm building a query like this in VBA strValues = strValues & ", " & _ "=" &! Problem is, the date field can sometimes be blank, and if it is I'm getting an expression error when it's . If you are in Access use the nz function. You can use the Nz function to return zero, a zero-length string (" "), or another specified value when a Variant is Null. For example, you can use. SQL statement in VBA - not recognising the 'Nz' function (XL) And I can't add my own query, with the date references removed, either.
You can use the Nz function to return zero, a zero-length string " "or another vba value when a Variant is Null. For example, you can use this function to convert a Null value to another value and prevent it from propagating through an expression.
If the value of the variant argument is Nullthe Nz function returns the number zero or a zero-length string always returns a zero-length string when used in a query expressiondepending on whether the context indicates the value should be a number or vba string. If the optional valueifnull argument is included, then the Nz function will return the value specified by that argument if the variant argument is Null.
When used in a query expression, the NZ function should always include the valueifnull argument. If the value of variant isn't Nullthen the Nz function returns the value of variant. The Nz function is useful for expressions that may include Null values. To force an expression to evaluate to a non- Null value even when it contains a Null value, use the Nz function to return zero, a zero-length string, or a custom return value.
You can often use the Nz function as an alternative to the IIf function. For example, in the following code, two expressions including date IIf function are necessary vba return the desired result. The first expression including the IIf function is used vba check the value of a variable and convert date to zero if it is Null.
In the next example, the Nz function provides the date functionality as the first expression, and the desired result is achieved in date step rather than date. If vba supply a date for the optional argument valueifnullthat value will be returned when variant is Null. By including this optional argument, you may be able to avoid the use of an expression containing the IIf function.
For example, the following expression uses the IIf function to return a string if date value of varFreight is Null. In the next example, the optional argument supplied to the Nz function provides the string to vba returned vba varFreight is Null.
The following example evaluates a control on a form and returns one of two strings date on the control's value. If the value of the control is Nullthe procedure uses the Nz function to convert a Null value date a zero-length string. Skip to main content. Exit focus mode. Theme Light. High contrast. Profile Bookmarks Collections Sign out.
Nz variant vba, [ valueifnull ] The Nz function has the date arguments. Argument Description variant A variable of data type Variant. A Variant that supplies a value to be returned if the variant vba is Null.
Vba argument enables you to return a value other than zero vba a zero-length string. When used in a query expression, vba NZ function should always include the valueifnull argument, If the value of variant isn't Nullthen the Date function returns the value of variant.
Remarks The Nz function is useful for expressions that may include Null values. Orders ' Return Control object variable pointing to ShipRegion.
Date ' Choose result based on value of control. In this article. Optional unless used in a query.
If I post a lot, it is because I am bored at work! Advice etc is up to you to persue Yes, building the sql statement so would like to do this during it, I've no idea how to build it with the nz function unfortunately. I got it working by setting the date to instead of NULL or "". Then I just did another query after this to update it to Null where the date value is Little messy but it's gotten me past this hurdle. Thanks to both of you for the help, it's much appreciated.
So Si's code was to add in the when you have a date, or not to put when null. Plus change the null to the string "null" To check your statement - before running it, use Code: debug.
Please post a thread in the appropriate forum. NET Attributes Ex. Item "newDate" newDate. Execute db. Close wrkspace. NET VB. Advertiser Disclosure: Some of the products that appear on this site are from companies from which QuinStreet receives compensation. This compensation may impact how and where products appear on this site including, for example, the order in which they appear.
QuinStreet does not include all companies or all types of products available in the marketplace. Register Help. Remember Me? Advertiser Disclosure. Advanced Search. Results 1 to 16 of Reply With Quote. One way to that in this situation is: Code:. Joined Dec 15, Messages Hi all, I'm trying to retrieve data from an Access database not my own Loosely, this is the method : Code:. Field1" ' etc. Sum Nz [tblTable]. Run time error Undefined function 'Nz' in expression.
Firefly Well-known Member. Joined Dec 28, Messages 3, Hi I believe you'd need t write it in such a way as you don't use Nz perhaps like: Code:. Sum Iif [tblTable]. Norie Well-known Member. Joined Apr 28, Messages 75, Nz is an Access function, but it's not a function that ADO recognises. Substituting Nz with Iif worked a treat! Just didn't know the equivalent syntax to replace it with. Perfect, thanks so much Firefly and Norie!
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