Look For Null Value In A Conditional Expression

Mar 9, 2008

Hi,
I need to create a conditional expresssion where if a null value is found, then a letter "N" must be inserted.
I create this expression but didnt work: (COL1 == NULL) ? "N" : COL1
So, if COL1 is null, then N .. but if it is nt null tehn COL1 = COL1
I think i', having a problem expressing the null.
Any idea for this?
Thanks!

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Conditional Split - Expression Evaluates To Null

Sep 5, 2007



Hi everyone!


I'm using a conditional split to discriminate modified records. My expression looks like this:
col1_source != col1_dest || col2_source != col2_des.....and so on. I use OLE DB Command afterward to update modified records.

It all works fine if no columns evaluate to null. If any (source or dest.) evaluates to null, component fails.

Any tips how to solve a problem?

It has to work like this:

If colX_source is null and colX_dest is not null --> Update
If colX_source is not null and colX_dest is null --> Update
If both colX_source and colX_dest are null --> No update

p.s. i apologize if a similar thread exists, I haven't found something of use to me.

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In the conditionnal transformation, I have an expression like below..


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Feb 9, 2004

I have a query with a conditional expression that I can do just fine in Access but I am having a bear of a time trying to create a similar SQL View. Baiscally I want to say, if column A is null, use value B else use value C.

In Access the SQL is this:

SELECT IIf([Categorycode] Is Null,[tblconstituents].[CASNumber],[categorycode]) AS Casnumber, Sum(qryweldingrod3a.CFume) AS CFume, Sum(qryweldingrod3a.cslag) AS cSlag
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But I know you can't use the IIF statement in SQL so I was trying CASE and was still coming up empty handed. Here is what I produced in SQL but it didn't work:

SELECT SUM(dbo.RecycleWR_qryWeldingRod3a_LBS.CFume) AS CFume, SUM(dbo.RecycleWR_qryWeldingRod3a_LBS.CSlag) AS cSlag,

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In the conditional split transformation,
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In both cases, the output type is set to Unicode String (DT_WSTR) with 4000 characters. The error in the first case is:

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Would this be considered a bug, or is there a reasonable explanation?

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Anna.

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I want to do conditional processing depending on values in the rows of a CTE. For example, is the following kind of thing possible with a CTE?:


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I think I know the answer to this but thought I'd ask anyway. 

I have a conditional split to check a column for null values or empty string values.  It looks like this:


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A slightly more complex expression that turns a null value into an empty string

A script component

Two conditional splits

Two paths out of one condtional split

I went with the first option, here is the expression I came up with:


LEN(ISNULL(Ballot) ? "" : TRIM(Ballot)) > 0

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I want to evaluate the first 3 characters of the string as numbers.

Example:
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Any data that is greater than 1.99, I want to make the background dark red, anything else including nulls, zebra formatting. I have the following expression built so far and it appears to work, except when the value is null. If the value is null, it leaves the background color white.

This is the warning: [rsRuntimeErrorInExpression] The BackgroundColor expression for the text box "Asthma" contains an error: Input string was not in a correct format.

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Nov 14, 2007

Hi All

New to SQL / Reporting Services.

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How do I do this?

Sorry if this is really trivial..but I just cannot find any info on this.

Many thanks

Ed

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|| (LOOK_OfficeID != OfficeID || ISNULL(LOOK_OfficeID) != ISNULL(OfficeID)) "

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Mar 11, 2008

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Could you enlighten me, please???
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DECLARE @I1 VARCHAR(5),
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[code]....

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Greetings SSIS friends,

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Sep 12, 2007

Hi,

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regards,
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I am struggling to write this condition. Without condition i.e. at present it saves the value in this database '1753-01-01 00:00:00.000'.
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Mar 7, 2008



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My current situation here is that users tend to say that this should not happen, since no pertinent information is contained in the report, why would they receive email with blank data in it.


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Sep 20, 2006

Hey. I need to substitute a value from a table if the input var is null. This is fine if the value coming from table is not null. But, it the table value is also null, it doesn't work. The problem I'm getting is in the isnull line which is in Dark green color because @inFileVersion is set to null explicitly and when the isnull function evaluates, value returned from DR.FileVersion is also null which is correct. I want the null=null to return true which is why i set ansi_nulls off. But it doesn't return anything. And the select statement should return something but in my case it returns null. If I comment the isnull statements in the where clause, everything works fine. Please tell me what am I doing wrong. Is it possible to do this without setting the ansi_nulls to off??? Thank you

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

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Feb 8, 2007

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Oct 20, 2015

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May 3, 2007

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

if (m_sqlParam.SqlValue != null)....
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Server Error in '/' Application.


Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.Source Error:



Line 89: sContact.Phone = sPhone.Text.Trim
Line 90: sContact.Email = sEmail.Text.Trim
Line 91: sContact.Save()
Line 92:
Line 93: Dim bContact As Contact = New Contact()Source File: F:InetpubwwwrootOutman KnifeCheckout.aspx.vb    Line: 91 Stack Trace:



[SqlException (0x80131904): Cannot insert the value NULL into column 'OrderID', table 'outman.outman.Contact'; column does not allow nulls. INSERT fails.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +857354
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +734966
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +188
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +1838
System.Data.SqlClient.SqlDataReader.HasMoreRows() +150
System.Data.SqlClient.SqlDataReader.ReadInternal(Boolean setTimeout) +214
System.Data.SqlClient.SqlDataReader.Read() +9
System.Data.SqlClient.SqlCommand.CompleteExecuteScalar(SqlDataReader ds, Boolean returnSqlValue) +39
System.Data.SqlClient.SqlCommand.ExecuteScalar() +148
SubSonic.SqlDataProvider.ExecuteScalar(QueryCommand qry) +209
SubSonic.DataService.ExecuteScalar(QueryCommand cmd) +37
SubSonic.ActiveRecord`1.Save(String userName) +120
SubSonic.ActiveRecord`1.Save() +31
Checkout.btnCheckout_Click(Object sender, EventArgs e) in F:InetpubwwwrootOutman KnifeCheckout.aspx.vb:91
System.Web.UI.WebControls.Button.OnClick(EventArgs e) +105
System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +107
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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42

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