Returning N/A Instead Of Null

May 1, 2005

I have null fields in one of the column and want to return "N/A" when the column is null. How can I do that ?

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SQL Returning Null

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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Need Help Returning A Null Value, Please

Jul 23, 2005

I've got the following query in SQL 2000:select a.SSN, a.MonthName, a.IMClinicDay,b.IMClinicDay as SecondDayfrom tblResidentRotations ainner join view7 bon a.SSN = b.SSNwhere a.AcademicYear = '2004-2005' and a.SSN = '999999999' anddatename(month, a.IMClinicDateFirst) = b.MonthNameThis query returns a resultset like this:<SSN> <Month> <a.IMClinicDay> <SecondDay>999999999 July Friday PM Tuesday PM999999999 September Tuesday PM Friday PM999999999 October None Friday PM999999999 November Friday PM Tuesday PM999999999 January Tuesday PM Friday PM999999999 April Friday PM Monday PM....and so onFor some of the months, there is a null value for "b.IMClinicDay". Forexample, it's null for August, December, and February. I want myresultset to look like this:<SSN> <Month> <a.IMClinicDay> <SecondDay>999999999 July Friday PM Tuesday PM999999999 August Tuesday PM null999999999 September Tuesday PM Friday PM999999999 October None Friday PM999999999 November Friday PM Tuesday PM999999999 December Tuesday PM null999999999 January Tuesday PM Friday PM999999999 February Friday PM null999999999 April Friday PM Monday PM....and so onHow can I return a null for these days? Thanks for any help oradvice.

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RowCount Is Returning Null

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 {
SqlCommand command = new SqlCommand();
command.CommandText = "RetrieveEmployeeKeyFromAssignmentTable";
command.CommandType = CommandType.StoredProcedure;
command.Connection = conn;
p1.ParameterName = "@assignmentPrimaryKey";
p1.Value = assignmentPrimaryKey;
p2.ParameterName = "@rowCount";
p2.Direction = ParameterDirection.Output;
p2.Value = 0;
command.Parameters.Add(p1); command.Parameters.Add(p2);
reader = command.ExecuteReader();
if (p2.Value == null) //always true
any suggestions would be appreciated.
thanks.  matt

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Returning Null Values

Jun 4, 2007

I have a simple table on my webpage which shows data from my database.
It all worked fine apart from one part. I wanted the select statement to select only NULL values from a column, as these are classed as open queries. Once I have closed the query a 0 or 1 will automatically be posted and will no longer have a NULL value.
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.
If I only did WHERE column <> 1.0, i only get the 0.0 results and none of the NULL results, but if I have no WHERE statement I get all the results including the NULL values.
 
Oliver

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@@Identity Is Returning NULL

Feb 22, 1999

Hi,

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

I have a table tblnetwork on which identity property
is defined on column networkid.

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

Using SQL2000. I want to return the # of columns with non-nullvalues. Here's my query so far:selectcase when Dx1 is not null then 0 else 1 end +case when Dx2 is not null then 0 else 1 end +case when Dx3 is not null then 0 else 1 end +case when Dx4 is not null then 0 else 1 end as DxCountfrom tblClerkshipDataCleanwhere PalmName = @PalmNameThere are 7 rows for the particular PalmName I'm using. The queryreturns a result of 7. However, there are 25 values in Dx1 thru Dx4so the query should be returning 25.What am I doing wrong here? Thanks in advance.

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Mar 9, 2006

I have a SQL 2005 clustered server which is returning a Null value for @@servername. I find the server entry in sysservers. I have replication configured on this so i am not able to do a Sp_dropserver & sp_addserver as this acts as a publisher. The configured merge repication stopped working because of this issue and I am not able to delete replication as the the delete option uses @@servername which returns a null value. So I am struck in a loop.

Any advice is appreciated.



thanks

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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>
<Parameter AllowDbNull="True" AutogeneratedName="" DataSourceName="" DbType="DateTime" Direction="Input" ParameterName="@GO_DateOff" Precision="0" ProviderType="DateTime" Scale="0" Size="0" SourceColumn="GO_DateOff" SourceColumnNullMapping="False" SourceVersion="Current">
</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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May 6, 2008

Hello again! I'm having yet another problem with my code.


CASE Kit WHEN 'Y' THEN '(Kit)' WHEN 'N' THEN '' END + ' ' +
CASE cream WHEN 'Y' THEN '(cream)' WHEN ' N' THEN '' END + ' ' +
CASE Phone WHEN 'Y' THEN '(Phone)' WHEN 'N' THEN '' END

The problem that I am running into is that if one of the values comes up as NULL the whole field is NULL. am i doing something wrong?

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Is there a way to allow the count () to return a 0 for the rows with a NULL value instead of not returning that row?

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Aug 8, 2006

When I use EncryptByKey function to encrypt text using AES 128 bit key, I get always null result. this is how I do the encryption:

ALTER PROCEDURE [dbo].[ProcMyProc](@ClearText nvarchar(50))
AS
BEGIN

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

Declare @Temp varbinary(8000);

Set @Temp =EncryptByKey(Key_GUID('MyKey'),@ClearText);

close symmetric key MyKey;

select @Temp as temp;
END


The result I get for this procedure is null. Is there something wrong with this code?

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Dec 5, 2006

Greetings SSIS friends,

I have the following expression but it doesn't seem to evaluate



findstring(eventstatus, "O", 1) > 0 ? "OFF" : NULL(DT_STR, 30, 1252)

All I want to do is something like :



All I want to do is return a NULL value if my condition is false.



Your help would be appreciated.

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Feb 27, 2007

I've a package that has a excel source. But i'm having a strange problem with it. One of the columns in the source file have a lot of null values but not all of them. But when i run the package a put a data viewer right after the source and i can see that it's showing that the few fields that should have values are also null. I've tried a lot of things but they didn't work. I need some help and fast if possible.
Example: Source file.xls
Name Grade OtherGrade
John 30 30.23
In the DataViewer
Name Grade OtherGrade
John 30 NULL

thanks

Adriano Coura

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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'
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(X is the name of the table)
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Sep 28, 2006

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(
emp_id,
request_submit_date,
request_start_date,
request_end_date,
request_duration,
request_notes,
time_off_id
)
Select@emp_id,
GETDATE(),
@request_start_date,
@request_end_date,
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Oct 26, 2007

Hi,

Here's a snippet of my java code :

Code:


boolean b = statementSQLServer.execute("select ROW_ID from S_INDUST where NAME='InWire'");

resultSetSQLServer = statementSQLServer.getResultSet();

System.out.println("b = " + b);
System.out.println("Are there any rows ?? " + resultSetSQLServer.next());



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");
connectionSQLServer = DriverManager.getConnection("jdbc:odbc:dm", "user", "pass");

statementSQLServer = connectionSQLServer.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_UPDATABLE);




Please help me out if possible....

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there are 3 parameters, date range, receipt, po #
if i select a distinct value and leave the others null, or 2 values 1 null etc, i would like to return the records, i am having trouble with the syntax. thank you

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Jul 20, 2005

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May 14, 2008

Hi,

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Now here is my account query: select contact_id, username, password from account.
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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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Jun 6, 2007

I have a stored proc which should be returning a datatable.  When I execute it manually it returns all requested results. However, when I call it via code (C#) it is returning a null table which leads me to believe the problem is in my code.  I'm not getting any errors during runtime.  Any help at all would be a BIG help!
private void PopulateControls()    {        DataTable table = CartAccess.getCart();    }
public static DataTable getCart() {        DbCommand comm = GenericDataAccess.CreateCommand();        comm.CommandText = "sp_cartGetCart";
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Dec 31, 2007

Need some join help...

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

Table 2 - CompanyModules
ModuleID | CompanyID
1 | 1
2 | 1
3 | 1
1 | 2


I'd like to return the following result set:
CompanyModules.CompanyID | Modules.Name | Present
1 | A | True
1 | B | True
1 | C | True
2 | A | True
2 | B | False
2 | C | False

What would be the query for this? Thanks.


Edit: This is the query I have tried:


select CompanyModules.CompanyID, Modules.Name, count(Modules.ID) as Present from

CompanyModules RIGHT outer Join Modules on CompanyModules.ModuleID = Modules.ID

group By CompanyModules.CompanyID, Modules.Name

Order by CompanyID


However, it only returns a partial result set:

CompanyModules.CompanyID | Modules.Name | Present
1 | A | 1
1 | B | 1
1 | C | 1
2 | A | 1

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<?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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I'm running the following test query on a single table:

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END AS TestCase,

[Code] ....

And here's an example of the output I'm getting:

Why the exact same subquery in the THEN of the second CASE statement is returning NULL when the first one completes as expected?

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set ansi_nulls off


go

declare

@inFileName VARCHAR (100),

@inFileSize INT,

@Id int,

@inlanguageid INT,

@inFileVersion VARCHAR (100),

@ExeState int

set @inFileName = 'A0006337.EXE'

set @inFileSize = 28796

set @Id= 1

set @inlanguageid =null

set @inFileVersion =NULL

set @ExeState =0

select Dr.StateID from table1 dR

where

DR.[FileName] = @inFileName

AND DR.FileSize =@inFileSize

AND DR.FileVersion = isnull(@inFileVersion,DR.FileVersion)

AND DR.languageid = isnull(@inlanguageid,null)

AND DR.[ID]= @ID

)

go

set ansi_nulls on

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Joins…..
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I have a report that is run on a monthly basis with a default date of null. The stored procedure determines the month-end date that it should use should it be sent a null date.

The report works fine when I tell it to create a history entry; however, when I try to add a subscription it doesn't appear to like the null parameter value. Since I have told the report to have a default value of null it doesn't allow me to enter a value on the subscription page.

Now, I suppose I could remove the parameter altogether from the stored proc, but then the users would never be able to run the report for a previous time period. Can someone explain to me why default values aren't allowed to be used on subscriptions when they seem to work fine for ad hoc and scheduled reports? This is really quite frustrating as most of my reports require a date value and default to null so that the user doesn't have to enter them for the latest data.



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Key cannot be null. Parameter name: key

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Returned SQLParam.SqlValue Is {Null} But Can't Test For Null?

Nov 5, 2007

I run a stored procedure for which I have a return variable. The stored procedure returns the ID of a row in a table if it exists:

m_sqlCmd.ExecuteScalar();

The m_sqlCmd has been fed an SQLParameter with direction set to output.
When the stored proc returns, I want to test it. Now when there IS a row it returns the ID ok.
When the row doesn't exist, in my watch I have:

m_sqlParam.SqlValue with value {Null}

I can't seem to work out how to test this value out.
I've tried several things but none seem to work.

This line compiles ok, but the following runs into the IF statement as if the SqlValue is null??

if (m_sqlParam.SqlValue != null)....
{

// I'm here!! I thought the watch says this is null???
}

Sorry if this is obvious, but I can't work this one out!!

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Any Improvements To This: Cannot Apply Value Null To Property Login: Value Cannot Be Null.

Mar 26, 2007

Looks like there was a fix and then I read this fix is not a fix. Does anyone know how this can be rectified? Does it mean that only Windows authentiation is the only way it works. The Software is over 2 years old, there are no excuses.

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