How To Write A Function With Integer Parameter Accepting Null

Jan 19, 2007

I've got a function which inserts into a database, and has arguments for each item being inserted

A couple of the items are integer datatypes (in SQL), but they will accept nulls

When I add my parameters, it asks to explicitly use the SQL datatype (which is integer):
.Add("@myParam", SqlDbType.Int).Value = myParam

In the header of the function, I assumed I could make the argument optional -
Optional ByVal myParam as Integer=System.DBNull.Value

However, when the function runs, I always get an error:
System.InvalidCastException was unhandled by user code
  Message="Conversion from type 'DBNull' to type 'Integer' is not valid."

I make them all Optional (which won't happen, but various arguments may be, at different times
and I get this error, with the last item (which is on a separate line), in red:
Constant expression is required.

How can I get around this?

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Problem Accepting Null Values

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I have created a stored procedure and when i execute it in sql server2005 it runs fine...the user can put in a parameter or none at all andthe corresponding results are returned.@name varchar(20) = NULLselect person.addressfrom personwhere person.name = @nameMy problem comes when i try using the stored procedure in my report inms reporting services. When i run the report and try not entering avalue for the parameter i get an error saying that it is required thati enter the parameter. Any ideas?

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using row number in sql server 2012.creating storeprocedure accepting customer id as input parameter.

cid        oid       items
1           1            10
1           2          12
1          3           3
1        4               4

so if we enter 1 as custid it got to give us 12 as the result..

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May 2, 2006

I'm getting a datatype error: "Application uses a value of the wrong type for the current operation" when executing the following stored procedure:


CREATE PROCEDURE dbo.Insert_Temp_ContactInfo
@sessionid varchar(50),
@FirstName varchar(50) = NULL,
@LastName varchar(50) = NULL,
@SchoolName varchar(50) = NULL,
@address varchar(50) = NULL,
@City varchar(50) = NULL,
@State int = NULL,
@Zip varchar(5) = NULL,
@Phone varchar(10) = NULL,
@Email varchar(50) = NULL,
@CurrentCustomer varchar(3) = NULL,
@ImplementationType int = NULL,
@ProductType int = NULL,
@Comment varchar(500) = NULL
AS
--check if a current record exists
SET NOCOUNT ON
begin
UPDATE dbo.Temp_ContactInfo
SET
FirstName = @FirstName,
LastName = @LastName,
SchoolName = @SchoolName,
Address = @address,
City = @City,
State = @State,
Zip = @Zip,
Phone = @Phone,
Email = @Email,
CurrentCustomer = @CurrentCustomer,
ImplementationType = @ImplementationType,
ProductType = @ProductType,
Comment = @Comment
WHERE
sessionid = @sessionid

If @@Rowcount = 0
INSERT INTO dbo.Temp_ContactInfo
(sessionid,
FirstName,
LastName,
SchoolName,
address,
City,
State,
Zip,
Phone,
Email,
CurrentCustomer,
ImplementationType,
ProductType,
Comment)
VALUES
(@sessionid,
@FirstName,
@LastName,
@SchoolName,
@address,
@City,
@State,
@Zip,
@Phone,
@Email,
@CurrentCustomer,
@ImplementationType,
@ProductType,
@Comment)
end
GO


This is code I'm using to call the procedure:


set InsertTempInfo = Server.CreateObject("ADODB.Command")
With InsertTempInfo
.ActiveConnection = MM_DBConn_STRING
.CommandText = "dbo.Insert_Temp_ContactInfo"
.CommandType = 4
.CommandTimeout = 0
.Prepared = true
.Parameters.Append .CreateParameter("@sessionid", 200, 1,50, usrid)
.Parameters.Append .CreateParameter("@FirstName", 200, 1,50,fname)
.Parameters.Append .CreateParameter("@LastName", 200, 1,50,lname)
.Parameters.Append .CreateParameter("@SchoolName", 200, 1,50,schoolname)
.Parameters.Append .CreateParameter("@address", 200, 1,50,address)
.Parameters.Append .CreateParameter("@City", 200, 1,50,city)
.Parameters.Append .CreateParameter("@State", 3, 1,4,state)
.Parameters.Append .CreateParameter("@Zip", 200, 1,5,zip)
.Parameters.Append .CreateParameter("@Phone", 200, 1,10,phone)
.Parameters.Append .CreateParameter("@Email", 200, 1,50,email)
.Parameters.Append .CreateParameter("@CurrentCustomer", 200, 1,3,currentcustomer)
.Parameters.Append .CreateParameter("@ImplementationType", 3, 1,4,implementationtype)
.Parameters.Append .CreateParameter("@ProductType", 3, 1,4,producttype)
.Parameters.Append .CreateParameter("@Comment", 200, 1,500,comment)
.Execute()
End With
Set InsertTempInfo = Nothing


the error is thrown on the following line:

.Parameters.Append .CreateParameter("@State", 3, 1,4,state)


I'm using a table to hold data that I can pass back to the original form page and re-populate the fields that were not validated correctly. The stored procedure either inserts or updates the record in the temp table I've created.

So, currently, as I'm testing, I'm just passing empty values to all the parameters and the @state parameter is failing and throwing the error.


I've double checked that the table has the state column set to integer datatype

The column is set as follows:

Name datatype length Allow Nulls
----------------------------------------------
State int 4 checked


I have tried setting the default value for every column to Null in the table and then also not using a default value. Either way, I still recieve the same error?

Not sure what else to look at?

It seems the problem might be that instead of a null value being passed to the parameter that it is actually empty. Can passing an empty value to a column of datatype integer cause this problem? If so, is there a way to correct it?

Thanks for any help.

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I am new to SQL Server and am trying to figure out why it behaves the way it is regarding integers with null values.

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Jan 29, 2008

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Jul 3, 2007



Hi have a problem to solve and I hope that this is not a SSRS Bug.



I created a Reports(using SQL Server Project) which has several parameters which values are passed to a SP.



One of these parameter is an Integer and it is an optional value, so if the user fill it is used by the SP, otherwise the SP uses NULL and run anyway.



I starts to define tha parameter:

Datatype = integer

Allow blank value

Available: Non queried

Default: Null



if I want to Preview the report I have to provide an integer to the parameter's field ...



If for instance I set:

Default: Not queried = 0

In the moment I deploy and I use the ReportViewer in my window application the parameter's field is unabled!!



So I tried this solution:

Datatype = integer

Allow blank value

Allow null value

Available: Non queried

Default: Null



In the preview the checkbox: NULL is checked and I click on the View Report.

But when I deploy it,in the ReportViewer in my window application the parameter's field this checkbox is unchecked.



Do I forget something during my setting??I have to control it programmatically??



N.B. By default the user will not user this parameter so the best is that he can click directly on "View Report" without any additional "work" on the parameter!!



Thank you for any help!

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hours is an integer and startTime is actually a string, but the thing is that this statement works fine if I use it like this:

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The first version is what I need so that the user can control from a parameter and I get the following error:


Error Source: System.Data
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BJ

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Jul 11, 2007

I am trying to create a report with a multi value integer parameter. I have tried



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I get an error stating



An error occurred during local report processing.

An error has occurred during report processing.

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Error during processing of the CommandText expression of dataset 'ProjectRequestStatus'.



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Thanks,



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I can get the correct result by using the following SELECT:

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Am I missing something here? Is there an simpler way to do this?



Any help will be appreciated.

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MEMBER [Measures].[ParameterValue] AS '[Time].[Week].CURRENTMEMBER.UNIQUENAME'

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[Measures].[ParameterValue],

[Measures].[ParameterLevel],

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[Measures].[DefaultBeginValue]

}

ON COLUMNS

, {

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Can someone help me make this MDX query sort on integer value instead of string.



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