Derived Column isnull with a date

[TeamGD]

In a Derived Column transformation I want to transform a date such that if it is a null then replace it with 1753-01-01 otherwise keep the date value. However I’m getting an error.

I’m using the following expression:

ISNULL( [hrs_client_dob] ) ? 1753-01-01 00:00:00.000 : [hrs_client_dob]

[hrs_client_dob] is being sourced from a SQL Server 2005 table and has datetime format.

The data type of the expression in the Derived Column transformation is DT_DBTimeStamp

I’ve tried double & single quotes around the date/time. I’ve tried it with no time values. I’ve tried different data types in the Derived Column transformation. All with no success.

What am I doing wrong?

Cheers

gmhm

 

[manmaria]

When you are editing the Expression is it in RED or black?
Can you see the error?

 

[TeamGD]

Thanks for responding manmaria.

The expression is in red.

If I click on OK, the Microsoft Visual Studio error is:

Error at Dim_Client [Replace Nulls[1132]]: Attempt to parse the expression “ISNULL( [hrs_client_dob] ) ? 1753-01-01 00:00:00.000 : [hrs_client_dob]” failed. The expression might contain an invalid token, an incomplete token, or an invalid element. It might not be well-formed, or might be missing part of a required element such as a parenthesis.

Cheers

gmhm

 

[TeamGD]

manmaria ... I've since found the solution. I needed to cast the date as per below.

ISNULL(hrs_client_dob) ? (DT_DBTIMESTAMP)"1753-01-01 00:00:00.000" : hrs_client_dob

Thanks must go to manmaria in the SQLServerCentral.com forum.

Cheers

gmhm