Proper Use Of Null Values In Stored Procedures

Oct 25, 2000

If I have a stored proc which has 2 input variables and for example
the 2nd one is null or not provided what is the best way to turn this null
into a wildcard. If the second one is an int and not provided should I
but a checknull statement in the proc and convert this to a wildcard %. I believe if I do I need to change the where clause "where field1 = @var "
to where field1 like @var". Any input appreciated

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Passing Null Values To Stored Procedures

Aug 29, 2006

Version: ASP.Net 2.0Language: C#Hello Everyone!I'm saving data from a function to an SQL Server 2000 db via a stored procedure. There are a few fields which are conditional and thus need not be passed to the procedure everytime. Under those circumstances I need to store null values in the fields.The problem is if I the value of the parameter as null, VS throws the error that a required parameter is not passed. I tried setting 'IsNullable' property of the parameter to true but it works for only those fields who are declared NULL in the stored procedure (For e.g. @DOB DATETIME = NULL).Strangely, this works well in classic ASP.Does anyone know how to accomplish this? Note, altering stored procedures is not an option for me.Thanks a lot!

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Sep 18, 2000

What are the proper procedures to move a SQL 6.5 to another 6.5 (new box)

I need to move everything including stored procedures?

Any tips would be helpful.

Thanks,
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Jul 24, 2006

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Jan 25, 2008

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-- Ryan

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Jan 18, 2007

hi this is my stored procedure.i am passing mu column nam and recordname has to be fetched.if run this proceedure i am getting null records only.but i am having records in my table

CREATE PROCEDURE HRUser_spsearch
(
@columnname varchar(50),
@recordname varchar(50)

)
As
if(@columnname !=' ' and @recordname !=' ')
begin
select userid,user_name,password,role_code,expiry_date from usermaster where '+@columnname+' like '+@recordname+"%"'
end
GO

can any one help to solve this please

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Aug 17, 2006

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Problem Returning Two Values From Stored Procedures

Jan 29, 2004

Hi, i am trying to return two values from SQL 2000 using a single stored procedure. The stored working fine in Query Analyser and returns the two values and two grids in the results window.

My problem is that when i execute the stored procedure using ADO.Net the dataset only has one of the values. e.g TId : 2, where it should read 'TId' : 2, 'ConfigPath': 'C:lah'

Please could anyone shed ligth on this problem?

here the code for the stored procedure:

CREATE PROCEDURE dbo.GetTillInfo
(
@TillIdR varchar(50),
@Password varchar(50)
)
AS

declare @TillId int
declare @configpath varchar(150)

IF Exists (SELECT Id FROM Tills WHERE TillRef=@TillId and TillPassword=@Password)
BEGIN

set @TillIdR = (SELECT Id FROM Tills WHERE TillRef=@TillId and TillPassword=@Password)
select @TillIdR as 'TId'

set @configpath = (SELECT configpath from customer,tills where
tills.customerid = customer.id and tills.id = @login)
select @configpath as 'ConfigPath'
END
ELSE
BEGIN
set @TillIdR = 0
select @TillIdR as 'TId'
set @configpath =''
select @configpath as 'ConfigPath'
END
GO

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Jul 4, 2006

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Jun 22, 2007

How to return multiple values from stored procedures to reports in sql server 2005

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Jul 11, 2007

Hi
 I am new to C# . I have a stored procedure which takes 4 parameters
GetSearchComplaint( Comp_ID , strViolator, strSts, FromDate, ToDate), These parameters can be null.
 And i have 5 textboxes from which i send the parameters.
I am validating the input like this :System.Nullable<int> Comp_ID;
 if ((txtsrchCompID.Text).Trim() == "")
{Comp_ID = null;
}else if ((txtsrchCompID.Text).Trim() == "")
{
try
{int i = int.Parse(txtsrchCompID.Text);
Comp_ID =i;
catch
{mesage += "Complaint ID is not valid";
}
}
 
When i run this i get this error  ---'Use of unassigned local variable 'Comp_ID' 
I get the same error for FromDate(DateTime) and ToDate(DateTime) . but not for string variables   strViolator and strSts.
How do i pass the null value to the stored procedure? pls help..

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Feb 4, 2007

I am trying to build an Sql page hit provider.  I am having trouble getting a count back from the database.  If I use ExecuteScalar it doesn't see any value in the returned R1C1.  If I use ExecuteNonQuery with a @ReturnValue, the return value parameter value is always zero.  Ideally I would like to use a dynamic stored proceudre if there are any suggestions for using them with C#.  My table has rvPathName, userName and a date.  I have the AddWebPageHit method working so I know data connection and sql support code in provider is working.  I think the problem is either in how I am writing the stored procedures or how I am trying to retrieve the data in C#.  Any help with this will be greatly appreciated.

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Eradicate Null Values From Stored Procedure Input

Apr 7, 2008

my stored procedure is

create procedure t1 (@a int,@b int,@c int,@d int,@e int,@f int)
as
begin
select no,name,department from emp where a = @a and b =@b orc =@c or
d = @d or e = @e or f = @f
end

my problem is while executing i may get null values as input to the stored procedure .
how to validate them ? any ideas .
are there any arrays.
if c and d are null then my condition would be
where a = @a and b =@b or e = @e or f = @f
how many loops shall i have to write.

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How To Get The Null Values In My Stored Procedure I Am Getting Error Dbnullvalue On Front End Aspx Form

Nov 2, 2004

I have the following stored proc. which i am using on the front end to get all the record from table:

if there are any fields it has anynull values in it i am getting error dbnull value error.
i have null value for ReviewerComment field, can you please tell me how to pass a "" if it is null, in the store proc only, to get all the fresh dat to front end before bnding it to the datagrid control.


CREATE PROCEDURE [dbo].[sp_displayrevws]
AS
select r.RevID,
rtrim(f.revwfunction) as revwfunction,
rtrim(u.uname) as uname,
CONVERT(varchar(10),r.Issued,101) as Issued,
r.ReviewerComment,
r.Response,
r.ModuleID,
rtrim(r.ModuleName) as modulename,
r.ReviewerUserID,r.RevFunctionid,r.Dispositionid
from TAB_ccsNetReviewers r, tabuname u, ccsfunctions f, ccsdisposition d where u.id = r.ReviewerUserID and r.RevFunctionid = f.id and r.Dispositionid = d.id and r.ModuleID = 1 order by r.RevID ASC
GO



Thank you very much.

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Learn To Access Stored Procedures With ADO.NET 2.0-VB 2005:How To Work With Output Parameters &&amp; Report Their Values In VB Forms?

Feb 11, 2008

Hi all,

In my SQL Server Management Studio Express (SSMSE), pubs Database has a Stored Procedure "byroyalty":

ALTER PROCEDURE byroyalty @percentage int

AS

select au_id from titleauthor

where titleauthor.royaltyper = @percentage

And Table "titleauthor" is:
au_id title_id au_ord royaltyper




172-32-1176
PS3333
1
100

213-46-8915
BU1032
2
40

213-46-8915
BU2075
1
100

238-95-7766
PC1035
1
100

267-41-2394
BU1111
2
40

267-41-2394
TC7777
2
30

274-80-9391
BU7832
1
100

409-56-7008
BU1032
1
60

427-17-2319
PC8888
1
50

472-27-2349
TC7777
3
30

486-29-1786
PC9999
1
100

486-29-1786
PS7777
1
100

648-92-1872
TC4203
1
100

672-71-3249
TC7777
1
40

712-45-1867
MC2222
1
100

722-51-5454
MC3021
1
75

724-80-9391
BU1111
1
60

724-80-9391
PS1372
2
25

756-30-7391
PS1372
1
75

807-91-6654
TC3218
1
100

846-92-7186
PC8888
2
50

899-46-2035
MC3021
2
25

899-46-2035
PS2091
2
50

998-72-3567
PS2091
1
50

998-72-3567
PS2106
1
100

NULL
NULL
NULL
NULL
////////////////////////////////////////////////////////////////////////////////////////////
I try to do an ADO.NET 2.0-VB 2005 programming in my VB 2005 Express to get @percentage printed out in the VB Form1. I read some articles in the websites and MSDN about this task and I am very confused about "How to Work with Output Parameters & Report their Values in VB Forms": (1) Do I need the Form.vb [Design] and specify its properties of the object and classes I want to printout? (2) After the SqlConnectionString and the connection.Open(), how can I bring the value of @percentage to the Form.vb? (3) The following is my imcomplete, crude draft code:

Imports System.Data
Imports System.Data.SqlClient
Imports System.Data.SqlTypes

Public Class Form1

Dim connectionString As String = "Data Source=.SQLEXPRESS;Initial Catalog=pubs;Integrated Security=SSPI;"

Dim connection As SqlConnection = New

SqlConnection(connectionString)

Try

connection.Open()

Dim command As SqlCommand = New SqlCommand("byroyalty", connection)

command.CommandType = CommandType.StoredProcedure
...................................................................
..................................................................
etc.
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
From the above-mentioned (1), (2) and (3), you can see how much I am lost/confused in attempting to do this task. Please help and give me some guidances and good key instructions for getting the output parameter printed out in the FORM.vb in my VB 2005 Express project.

Thanks in advance,
Scott Chang


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Dec 12, 2005

I'm trying to handle a stored procedure parameter. What needs to happen is that a particular statement shouldn't be executed if the parameter is empty. However, when I try it I get the following error:Cannot use empty object or column names. Use a single space if necessary.So, what's the correct way of doing the following?IF @filename <> ""BEGIN        UPDATE Experimental_Images SET contentType = @contentType, filename = @filename           WHERE (id = @iconNo)END

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User-defined Stored Procedures InsertCustomerin Northwind Database That Is Cached In Database Explorer:No New Values Inserted?

Jan 14, 2008

Hi all,

I put "Northwind" Database in the Database Explorer of my VB 2005 Express and I have created the following stored procedure in the Database Exploror:

--User-defined stored procedure 'InsertCustomer'--

ALTER PROCEDURE dbo.InsertCustomer

(

@CustomerID nchar(5),

@CompanyName nvarchar(40),

@ContactName nvarchar(30),

@ContactTitle nvarchar(30),

@Address nvarchar(60),

@City nvarchar(15),

@Region nvarchar(15),

@PostalCode nvarchar(10),

@Country nvarchar(15),

@Phone nvarchar(24),

@Fax nvarchar(24)

)

AS

INSERT INTO Customers

(

CustomerID,

CompanyName,

ContactName,

ContactTitle,

Address,

City,

Region,

PostalCode,

Country,

Phone,

Fax

)

VALUES

(

@CustomerID,

@CompanyName,

@ContactName,

@ContactTitle,

@Address,

@City,

@Region,

@PostalCode,

@Country,

@Phone,

@Fax

)
=================================================
In my VB 2005 Express, I created a project "KimmelCallNWspWithAdoNet" that had the following code:
--Form_Kimmel.vb--
Imports System.Data

Imports System.Data.SqlClient

Imports System.Data.SqlTypes

Public Class Form_Kimmel


Public Sub InsertCustomer()

Dim connectionString As String = "Integrated Security-SSPI;Persist Security Info=False;" + _

"Initial Catalog=northwind;Data Source=NAB-WK-EN12345"

Dim connection As SqlConnection = New SqlConnection(connectionString)

connection.Open()

Try

Dim command As SqlCommand = New SqlCommand("InsertCustomer", connection)

command.CommandType = CommandType.StoredProcedure

command.Parameters.Add("@CustomerID", "PAULK")

command.Parameters.Add("@CompanyName", "Pauly's Bar")

command.Parameters.Add("@ContactName", "Paul Kimmel")

command.Parameters.Add("@ContactTitle", "The Fat Man")

command.Parameters.Add("@Address", "31025 La Jolla")

command.Parameters.Add("@City", "Inglewoog")

command.Parameters.Add("@Region", "CA")

command.Parameters.Add("@Counrty", "USA")

command.Parameters.Add("@PostalCode", "90425")

command.Parameters.Add("@Phone", "(415) 555-1234")

command.Parameters.Add("@Fax", "(415 555-1235")

Console.WriteLine("Row inserted: " + _

command.ExecuteNonQuery().ToString)

Catch ex As Exception

Console.WriteLine(ex.Message)

Throw

Finally

connection.Close()

End Try



End Sub

End Class
==============================================


I executed the Form_Kimmel.vb and I got no errors. But I did not get the new values insterted in the table "Custermers" of Northwind database. Please help and tell me what I did wrong and how to correct this problem.

Thanks in advance,
Scott Chang

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Jul 23, 2005

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CREATE TABLE [dbo].[Import_CustomerSales](
 [CustomerId] [nvarchar](50) NULL,
 [CustomeName] [nvarchar](50) NULL,
 [CustomerSales] [nvarchar](50) NULL
) ON [PRIMARY]

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Mar 29, 2006

Hi

can somebody explain me how I can assign a NULL value to a datetime type field in the script transformation editor in a data flow task.
In the script hereunder, Row.Datum1_IsNull is true, but still Row.OutputDatum1 will be assigned a value '0001-01-01' which generates an error (not a valid datetime). All alternatives known to me (CDate("") or Convert.ToDateTime("") or Convert.ToDateTime(System.DBNull.Value)) were not successful.
Leaving out the ELSE clause generates following error: Error: Year, Month, and Day parameters describe an un-representable DateTime.




If Not Row.Datum1_IsNull Then

Row.OutputDatum1 = Row.Datum1

Else

Row.OutputDatum1 = CDate(System.Convert.DBNull)

End If



Any help welcome.

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Hi,

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e.g.

Rank Blah Blah
1 - -
2 - -
3 - -
NULL - -
NULL - -

At present the NULLs are at the top of the list, but I do not want my ranking in descending order. Any suggestions?

Thanks
Dan

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Apr 27, 2005

Rather than the real code, here's a sample we came up with.
 
Here's the C# Code:
public class sptest : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label Label1;
private DataSet dtsData;

private void Page_Load(object sender, System.EventArgs e)
{
// Put user code to initialize the page here
string strSP = "sp_testOutput";
SqlParameter[] Params = new SqlParameter[2];
Params[0] = new SqlParameter("@Input", "Pudding");
Params[1] = new SqlParameter("@Error_Text", "");
Params[1].Direction = ParameterDirection.Output;
try
{
this.dtsData = SqlHelper.ExecuteDataset(ConfigurationSettings.AppSettings["SIM_DSN"], CommandType.StoredProcedure, strSP, Params);
Label1.Text = Params[0].Value.ToString() + "--Returned Val is" + Params[1].Value.ToString();
}
//catch (System.Data.SqlClient.SqlException ex)
catch (Exception ex)
{
Label1.Text = ex.ToString();

}
}
 
Here is the stored procedure:
 
CREATE PROCEDURE [user1122500].[sp_testOutput](@Input nvarchar(76),@Error_Text nvarchar(10) OUTPUT)AS
SET @Error_Text = 'Test'GO
When I run this, it prints up the input variable, but not the output variable.

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Sep 30, 2006

Hi,



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Thank you in advance for any help on this matter



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For example, even this simple little guy:

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AS

PRINT 'BOB'

GO

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Thanks,
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Jan 16, 2006

Hi,

How can I use "Derived Column" to check if a Datetime value is null or not and if null to insert  00/00/00 instead. ?

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Or

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Or


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What a normally use is just a simple "(DT_DBTIMESTAMP)[Column 34]"
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Apr 20, 2007

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which will lead to more code, right?



Davids Learning SQL

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Dealing With Null Values

Jul 31, 2006

hi ive got a inert sub where i grab values from text boxes etxthe values are passed to a stored procedure however , one of these fields is a date field , but the field is not required ...so on this line if the date text box is left blank i get an error , not a valid date    .Parameters.Add("@actiondate", SqlDbType.DateTime).Value = txtActionDate.Texti have tried ( the actiondate field can take nulls ..)if txtActionDate="" then    .Parameters.Add("@actiondate", SqlDbType.DateTime).Value = nothing else.Parameters.Add("@actiondate", SqlDbType.DateTime).Value = txtActionDate.Textend if but this doesnt workwhat is the best way of allowing blank values to be passed to the stored procedure( it doesnt fall over with normal text / varchar fields ) thanks

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