SSIS Derive column for converting  bigint datetimekey

Posted on 2013-06-11
Last Modified: 2016-02-11

I have a issue converting Datetime field to integer using derive column.
it could be a limitation on derive column.

my Derive column expression as follows:

YEAR(ValidLastAlertDate) * 100000000 + (MONTH(ValidLastAlertDate) * 1000000) + DAY(ValidLastAlertDate) * 10000 + DATEPART("hh",ValidLastAlertDate) * 100 + DATEPART("mi",ValidLastAlertDate)

Data Types:

four-byte signed integer [DT_I4]                                                

Can anybody has the solution to this?

Thanks in advance
Question by:keplan
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LVL 17

Expert Comment

by:Kent Dyer
ID: 39239974
LVL 17

Expert Comment

by:Kent Dyer
ID: 39239985
Here is another way..

select ValidLastAlertDate
,(CONVERT(BIGINT,YEAR(ValidLastAlertDate)) * 100000000)+(CONVERT(BIGINT,MONTH(ValidLastAlertDate)) * 1000000)+(CONVERT(BIGINT,DAY(ValidLastAlertDate)) * 10000)+DATEPART("hh",ValidLastAlertDate) * 100+DATEPART("mi",ValidLastAlertDate)
 from YOUR_TABLE (nolock) where [id]=1

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Author Comment

ID: 39240803

I need this to be achieved through SSIS.
So Is this a limitation on SSIS
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LVL 21

Expert Comment

by:Jason Yousef, MS
ID: 39240831
what's the expected output (result) ?  not data type...

Author Comment

ID: 39243017
Out come is the DateTimeKey as interger value:


LVL 21

Accepted Solution

Jason Yousef, MS earned 370 total points
ID: 39248340
[DT_I4]   is INT and that's small for your expected output...
cast to BIG int instead [DT_I8]
(DT_I8)YEAR(ValidLastAlertDate) * 100000000 + (MONTH(ValidLastAlertDate) * 1000000) + DAY(ValidLastAlertDate) * 10000 + DATEPART("hh",ValidLastAlertDate) * 100 + DATEPART("mi",ValidLastAlertDate)

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Please let me know if you got an error and what's the error.

Author Closing Comment

ID: 39249499

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