Null Values For Datetime Values Converted To '0001-01-01'

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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UPDATE: Below is a T-SQL script you can run to demonstrate the effect I'm experiencing...




Code Snippet

-- Create test database
CREATE DATABASE FullTextTest
GO
USE FullTextTest
GO

-- Create test data table
CREATE TABLE TestTable
(
pk UNIQUEIDENTIFIER NOT NULL CONSTRAINT tablePK PRIMARY KEY,
varbinarycol VARBINARY(MAX),
documentExtension VARCHAR(5),
)
GO

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-- The bellow two entries below WILL NOT BE FOUND (the text source is taken from an NVARCHAR(MAX) value)
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GO

-- Create the full text catalog
sp_fulltext_database 'enable'
GO
CREATE FULLTEXT CATALOG TEST AS DEFAULT
GO
CREATE FULLTEXT INDEX ON TestTable (varbinarycol TYPE COLUMN documentExtension LANGUAGE 1033)
KEY INDEX tablePK
GO

-- NOTE: You might need to give the catalog a chance to build before running the script below.

-- Now do a search that SHOULD RETURN 3 ROWS of data, but ONLY 1 ROW IS RETURNED
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Feb 24, 2004

Hi,

I am having a column subdate as smalldatetime.

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i tried using subdate="". But it inserts some min value of my calendar popup.

Is there a way that i could insert null values into smalldatetime field of the SQl database.

Thanks,
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Oct 4, 2004

I am retrieving a <NULL> value out of a SQL database, displaying it in a text box, then updating the database with the results of the text box.

I am using the following code to make the insert.

.Parameters("@BodilyInjuryPerson").Value = txtBodilyInjuryPerson.Text

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Back in the old days, when I was using Random Access databases, you just inserted a Char(0). But that doesn't work any more.

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Jan 28, 2005

Hi all

Iam having some problems with null values

try
{
cmd.Parameters["@fmv"].Value = Convert.ToDecimal(TextBox13.Text);
}
catch
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cmd.Parameters["@fmv"].Value =System.Data.SqlTypes.SqlDecimal.Null;
}

for Empty Textbox values
i am getting the following error,

System.Data.SqlTypes.SqlNullValueException: Data is Null. This method or property cannot be called on Null values.

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System.Data.SqlType.SqlDatetime.Null works but SqlDecimal.Null does not work.

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Aug 3, 2005

For some reason my Stored Procs are not recognizing NULL values within my database:For example:Select *From ResultsWhere(home_Phone IS NULL)All the home_Phone vaules that are NULL are not being picked up by the query.  Any ideas are appriciated.  Thanks in advance everyone. RB 

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