ASP Returning Null Sized Field From MS SQL Database

Jul 20, 2005

We currently have an SQL db running on a web server.
One of these fields is a large(ish) amount of text data � up to 400
characters � and has been cast variously as varchar, nchar and text
type to overcome a problem. The problem appears to be in retrieving
the data via ASP. I understand that ASP can handle string data of this
size so I am okay there.
When the records are retrieved from the db, the data string length =0.
I know the data is there because I have written a Delphi data manager
which interrogates the db and shows all records and their contents.
So if ASP can handle strings this size and the data is there, why do I
get a data length of zero bytes returned when I interrogate the record
set?
Whichever way I cast this field I get the same result.

I know the code is sound as it works locally through a MS SQL server
on my PS.
Anyone have this problem or know what's causing it? I have logged a
support call with my hosting company, but they haven't replied as yet
and I am stuck on an urgent project.

Any suggestions?

Cheers
Grant

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Sql SELECT Returning NULL On DateTime Field

Aug 8, 2006

Hi there ;
This Problem is goin to make me crazy!
I've got a table with couple of fields, 2 of them are DateTime, in Sql Express 05 .
I used asp.net 2.0 to insert datetime values, directly, using sth like DateTime.Now.ToString() .
i use 2 selects as follows :
1)select * from X where Date1='8/9/2006 11:17:41 AM'
2)select * from X where Date2='8/9/2006 11:17:41 AM'
#1 is OK, but the second one returns a row with all columns set to NULL .
(X is the name of the table)
Thanks in advance

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Sep 16, 2015

I have a xml file downloaded from webAPI which i want to import into my database.There are several sub childnodes and need to combine data between nodes.

<?xml version="1.0" encoding="UTF-8"?>
<classes type="array">
<class>
<class_id>3S</class_id>
<class_pk type="integer">3900</class_pk>

[code]....

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Feb 27, 2008

Hi,
I am building a website in ASP.net C# for a university project, and would like to search a table (Member) for a field (UserName) using a session variable Session["sUserName"]. If that field is null, then I would like to insert that session variable into the field to start to create a new user. However, I am getting errors saying that I am using invalid expression terms. My code is;
//Create the Command, passing in the SQL statement and the ConnectionString queryString = "SELECT UserName FROM Member WHERE (UserName = @myUsername); ";
SqlCommand cmd = new SqlCommand(queryString, sqlConn);cmd.Parameters.Add(new SqlParameter("@myUsername", Convert.ToString(Session["sUserName"])));
//If UserName is null, display confirmation, else display errorif (UserName == null) ;
{UserNameCheckLabel.Text = "Username okay";
String queryString = "INSERT INTO Member (UserName) VALUES(@myUsername); ";SqlCommand cmd = new SqlCommand(queryString, sqlConn); cmd.Parameters.Add(new SqlParameter("@myUsername", Convert.ToString(Session["sUserName"])));
}else;
{UserNameCheckLabel.Text = "That username is in use";
}
I have a feeling I should be checking the database for the UserName, but I'm not sure whether to put this in the SELECT statement part or as a method... I would be most grateful for any advice!
Many thanks,
Chima

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May 9, 2005

I have a function that updates a table in sql server
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How can I do this? I get errors if I submit a null integer when there is a foreign key constraint. What is the best way to handle this? should I just make all parameters objects? so that I can set them to DBNull.Value?
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May 31, 2004

How can I pass into the database (@User_fax = null) if the fax form field is empty, from a command type Stored Procedure? For example:

Dim CmdUpdate As New SqlCommand("Form2_NewUser", strConnection)
CmdUpdate.CommandType = CommandType.StoredProcedure

CmdUpdate.Parameters.Add("@User_fax", SqlDbType.char, 9)
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...

strConnection.open()
CmdUpdate.ExecuteNonQuery
strConnection.close()

And, the stored procedure inside Sql server:

USE market1
GO
ALTER PROC Form2_NewUser
@User_id bigint, @User_fax char(9),...

AS

SET NOCOUNT ON
UPDATE Users
SET User_fax = @User_fax, ...

WHERE User_id = @User_id
SET NOCOUNT OFF
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Thank you,
Cesar

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Jun 21, 2005

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 End Sub Here's the code for the form: <form id="frmDomainNames" method="post" runat="server" onSubmit="return InputIsValid()"> <div align="center"> <table border="0" cellpadding="2" cellspacing="2" width="50%" bgcolor="#330099"> <tr> <td height="37" colspan="2" align="center" valign="middle" bgcolor="#330099">Domain Name Information</td> <td> </td> </tr> <tr> <td height="42" align="right" valign="top" bgcolor="#e8e8e8"> Client's Name:</td> <td colspan="2" valign="top" bgcolor="#e8e8e8"> <asp:dropdownlist id="dropClient" runat="server" /> </td> </tr> <tr> <td height="42" align="right" valign="top" bgcolor="#e8e8e8"> Domain Name:</td> <td colspan="2" valign="top" bgcolor="#e8e8e8"> <ASP:TextBox id="txtDomainName" runat="server" TextMode="SingleLine" Columns="30" /> </td> <tr> <td height="42" align="right" valign="top" bgcolor="#e8e8e8"> Registrar:</td> <td colspan="2" valign="top" bgcolor="#e8e8e8"> <ASP:TextBox id="txtRegistrar" runat="server" TextMode="SingleLine" Columns="30" /> </td> </tr> <tr> <td height="42" align="right" valign="top" bgcolor="#e8e8e8"> Expiration Date:</td> <td colspan="2" valign="top" bgcolor="#e8e8e8"> <ASP:TextBox id="txtExpirationDate" runat="server" TextMode="SingleLine" Columns="10" /> </td> </tr>
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Feb 13, 2007

Thanks to everyone in advance

The code below returns the members who have accounts that are inactive, and works correctly.
It returns the memberid, but returns null values for the barcode values.
I am explicitly looking for unmatched rows, i.e. the LEFT OUTER JOIN will return joined member-address
rows which do not have a matching account, according to the ON conditions, and these are the ones I want
because of that WHERE condition.
Therefore account.barcode will always be NULL too.

Is there to perform the same query and return account details?
I have tried running a query to return just the memberid values and then perform a second query to match the account
details, but this is very ineffecient and slow.

select member.memberid, account.barcode
FROM member
INNER
JOIN address
ON address.MemberID = member.Memberid
LEFT OUTER
JOIN account
ON account.Memberid = member.MemberID
AND account.enddate >= current_date
AND account.closed = 0
WHERE account.Memberid is null AND member.isDeleted = 0

Special thanks to r937 for help.
James

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Apr 4, 2007

i have 2 stored procedures: a delete and a select. the delete sp returns the rowcount properly. the select returns null. the code for both sp's is extremely simple and extremely similar. when i execute the select sp in server management studio the rowcount shows a 1 as expected. but the calling method gets null.
SP Code
ALTER PROCEDURE [dbo].[RetrieveEmployeeKeyFromAssignmentTable]
@assignmentPrimaryKey int,
@rowCount int OUTPUT
AS
BEGIN
SET NOCOUNT ON;
SELECT employeePrimaryKey FROM assignmentTable WHERE primaryKey = @assignmentPrimaryKey;
SET @rowCount = @@RowCount;
END
c# code
SqlConnection conn = GetOpenSqlConnection();
if (conn == null) return true;
SqlDataReader reader = null;
SqlParameter p1 = new SqlParameter(); SqlParameter p2 = new SqlParameter();
try {
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command.CommandText = "RetrieveEmployeeKeyFromAssignmentTable";
command.CommandType = CommandType.StoredProcedure;
command.Connection = conn;
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p1.Value = assignmentPrimaryKey;
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p2.Direction = ParameterDirection.Output;
p2.Value = 0;
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I have a simple table on my webpage which shows data from my database.
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I have a simple select statement (which I will post on here when I log in with my work computer) and at the end I have a WHERE Column = NULL. I have also tried WHERE column <> 0.0 AND column <>1.0 and that did not work.
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Oliver

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Feb 22, 1999

Hi,

I have upgraded database from sql6.5 to sql 7.o

I have a table tblnetwork on which identity property
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When I issue the following command new record is getting inserted into
tblnetwork and identity column is getting incremented properly.
But, I am not able to get the @@identity value
It is returned as NULL.

insert tblnetwork(formalname,networktype)
values ("name2",11897)
select @@identity

I need this value to insert into some other table.
Pls suggest me why @@identity is returning NULL
thanks,
MMS

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Jul 20, 2005

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thanks

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Dec 30, 2003

I need to pass in null/blank value in the date field or declare the field as string and convert date back to string.

I tried the 2nd option but I am having trouble converting the two digits of the recordset (rs_get_msp_info(2), 1, 2))) into a four digit yr. But it will only the yr in two digits.
The mfg_start_date is delcared as a string variable

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option 1
I will have to declare the mfg_start_date as date but I need to send in a blank value for this variable in the stored procedure. It won't accept a null or blank value.

With refresh_shipping_sched
.ActiveConnection = CurrentProject.Connection
.CommandText = "spRefresh_shipping_sched"
.CommandType = adCmdStoredProc
.Parameters.Append .CreateParameter("ret_val", adInteger, adParamReturnValue)
.Parameters.Append .CreateParameter("@option", adInteger, adParamInput, 4, update_option)
.Parameters.Append .CreateParameter("@mfg_ord_num", adChar, adParamInput, mfg_ord_num_length, "")
.Parameters.Append .CreateParameter("@mfg_start_date", adChar, adParamInput, 10, "")
Set rs_refresh_shipping_sched = .Execute
End

Please help

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Jun 5, 2006

I am trying to insert a record to based on the source below, however the GUID of GiftOcc_ID is being returned as zero's so the first record can be added but as it is defined as the primary Key and uniqueidentifier the next record fails with a duplicate entry. Basically how do I ensure that the GUID is created and not nulls. As you can see I am trying to use Newid() which I have inserted as a default value but that does not work. Also as it is a unique identifier the "is identity" is not available

Protected Sub CreateGiftOccasion(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
Try
Dim null As New Nullable(Of Integer)
Dim da As New DataSet2TableAdapters.Gift_OccasionTableAdapter
Dim GiftOcc_ID As Guid
da.Insert(newid(), Occ_Type_Text.Text, Occ_Desc_Text.Text, Calendar1.SelectedDate, Calendar2.SelectedDate, 1)
Catch ex As Exception

Response.Write("Ooops")
End Try
End Sub

The code from the table adapter regarding inserts is:
<InsertCommand>
<DbCommand CommandType="Text" ModifiedByUser="False">
<CommandText>INSERT INTO [dbo].[Gift_Occasion] ([GO_ID], [Go_Type], [GO_Description], [GO_DateOn], [GO_DateOff], [GO_Active]) VALUES (@GO_ID, @Go_Type, @GO_Description, @GO_DateOn, @GO_DateOff, @GO_Active);
SELECT GO_ID, Go_Type, GO_Description, GO_DateOn, GO_DateOff, GO_Active FROM Gift_Occasion WHERE (GO_ID = @GO_ID)</CommandText>
<Parameters>
<Parameter AllowDbNull="False" AutogeneratedName="" DataSourceName="" DbType="Guid" Direction="Input" ParameterName="@GO_ID" Precision="0" ProviderType="UniqueIdentifier" Scale="0" Size="0" SourceColumn="GO_ID" SourceColumnNullMapping="False" SourceVersion="Current">
</Parameter>
<Parameter AllowDbNull="True" AutogeneratedName="" DataSourceName="" DbType="AnsiString" Direction="Input" ParameterName="@Go_Type" Precision="0" ProviderType="Text" Scale="0" Size="0" SourceColumn="Go_Type" SourceColumnNullMapping="False" SourceVersion="Current">
</Parameter>
<Parameter AllowDbNull="True" AutogeneratedName="" DataSourceName="" DbType="AnsiString" Direction="Input" ParameterName="@GO_Description" Precision="0" ProviderType="Text" Scale="0" Size="0" SourceColumn="GO_Description" SourceColumnNullMapping="False" SourceVersion="Current">
</Parameter>
<Parameter AllowDbNull="True" AutogeneratedName="" DataSourceName="" DbType="DateTime" Direction="Input" ParameterName="@GO_DateOn" Precision="0" ProviderType="DateTime" Scale="0" Size="0" SourceColumn="GO_DateOn" SourceColumnNullMapping="False" SourceVersion="Current">
</Parameter>
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</Parameter>
<Parameter AllowDbNull="True" AutogeneratedName="" DataSourceName="" DbType="AnsiString" Direction="Input" ParameterName="@GO_Active" Precision="0" ProviderType="VarChar" Scale="0" Size="0" SourceColumn="GO_Active" SourceColumnNullMapping="False" SourceVersion="Current">
</Parameter>
</Parameters>
</DbCommand>
</InsertCommand>

Many thanks in advance for any assistance

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Nov 28, 2006

I'm still having issues with this despite my attempts to resolve. I even
have "with exec as dbo" in my sproc, and and "exec as dbo" in my execution,
but still the encrypted data returns nulls when I exec as a user other than
DBO. Below is precisely what I have done. All ideas are welcomed.

TIA, ChrisR

--If there is no master key, create one now

IF NOT EXISTS
(SELECT * FROM sys.symmetric_keys WHERE symmetric_key_id = 101)
CREATE MASTER KEY ENCRYPTION BY
PASSWORD =
'23987hxJKL95QYV4369#ghf0%94467GRdkjuw54ie5y01478d Dkjdahflkujaslekjg5k3fd117
r$$#1946kcj$n44ncjhdlj'
GO

CREATE CERTIFICATE HumanResources037
WITH SUBJECT = 'Employee Social Security Numbers';
GO

CREATE SYMMETRIC KEY SSN_Key_01
WITH ALGORITHM = DES
ENCRYPTION BY CERTIFICATE HumanResources037;
GO

USE [AdventureWorks];
GO

-- Create a column in which to store the encrypted data
ALTER TABLE HumanResources.Employee
ADD EncryptedNationalIDNumber varbinary(128);
GO

-- Open the symmetric key with which to encrypt the data
OPEN SYMMETRIC KEY SSN_Key_01
DECRYPTION BY CERTIFICATE HumanResources037;

-- Encrypt the value in column NationalIDNumber with symmetric
-- key SSN_Key_01. Save the result in column EncryptedNationalIDNumber.
UPDATE HumanResources.Employee
SET EncryptedNationalIDNumber = EncryptByKey(Key_GUID('SSN_Key_01'),
NationalIDNumber);
GO

-- Verify the encryption.
-- First, open the symmetric key with which to decrypt the data
OPEN SYMMETRIC KEY SSN_Key_01
DECRYPTION BY CERTIFICATE HumanResources037;
GO

-- Now list the original ID, the encrypted ID, and the
-- decrypted ciphertext. If the decryption worked, the original
-- and the decrypted ID will match.

alter procedure getDecryptedIDNumber
with exec as owner
as
SELECT NationalIDNumber, EncryptedNationalIDNumber
AS "Encrypted ID Number",
CONVERT(nvarchar, DecryptByKey(EncryptedNationalIDNumber))
AS "Decrypted ID Number"
FROM HumanResources.Employee;
GO

/*works for me, shows the decrypted data*/

exec getDecryptedIDNumber

USE [master]
GO

CREATE LOGIN [test] WITH PASSWORD=N'test',
DEFAULT_DATABASE=[AdventureWorks], CHECK_EXPIRATION=OFF, CHECK_POLICY=OFF
GO

USE [AdventureWorks]
GO

CREATE USER [test] FOR LOGIN [test]
GO

use [AdventureWorks]
GO

GRANT EXECUTE ON [dbo].[getDecryptedIDNumber] TO [test]
GO

GRANT IMPERSONATE ON USER:: dbo TO test;
GO

/*Now, open up a "file/new/DB Engine Query" and login with the test login*/
exec as user = 'dbo'
exec getDecryptedIDNumber

/*This returns NULL values where it should show the decrypted data*/

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AS
BEGIN

OPEN SYMMETRIC KEY MyKey DECRYPTION BY PASSWORD= 'MY_Password_128';

Declare @Temp varbinary(8000);

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close symmetric key MyKey;

select @Temp as temp;
END

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Guys,

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(
emp_id,
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request_start_date,
request_end_date,
request_duration,
request_notes,
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)
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resultSetSQLServer = statementSQLServer.getResultSet();

System.out.println("b = " + b);
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This code is returning null resultset.

But when I fire the same query directly into MS SQL, it is returning the corresponding rows.

I dont know where i'm going wrong. But just to make things more clearer, here's my connectivity code :

Code:

Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
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I'm running into an issue where if a report retrieves 0 records, I run into an error. My report has 2 queries-- the main query to retrieve Account information and the other to return Contact information based on the contact id(s) returned by the Account query. The reason needing two separate queries is that the contact and account tables are on different databases.

Now here is my account query: select contact_id, username, password from account.
My contact query looks like this: select name, address, .... from contact where contact_id = @contact_id.

In my report parameters, I define contact_id like this:
*******************************************
name = contact_id
data type = integer
prompt = [blanked out]
hidden = checked
internal = checked
multi-value = unchecked
allow null value = checked
allow blank value = unchecked

available values:
from query: dataset = account
value field = contact_id

label field = contact_id

default values:
from query: dataset = account
value field = contact_id
**********************************************

Now, when I run my report and knowing there are no records, I get the following error: "The 'contact_id' parameter is missing a value". Any ideas on how to solve this issue? Thanks.

larry

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Table 1 - Modules:
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1 | A
2 | B
3 | C

Table 2 - CompanyModules
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2 | 1
3 | 1
1 | 2

I'd like to return the following result set:
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1 | C | 1
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[Code] ....

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