Question

SSIS - how to import a DT_STR data type from a csv flat file into a SQL table datetime field

Asked by: qprjohn121

Hi I am very new to SSIS so the answer to this may be very easy indeed - dont forget to suggest the obvious!

I am importing a csv file in which the first column represents a date, and is in the form:

2007-04-25 00:00:00.000

The output column data type is DT_STR and the destination SQL table column is of type datetime. At the moment I get the following error messages:

An OLE DB record is available.  Source: "Microsoft SQL Server Native Client 10.0"  Hresult: 0x80004005  Description: "Invalid character value for cast specification".

[OLE DB Destination [9]] Error: There was an error with input column "Column 0" (93) on input "OLE DB Destination Input" (22). The column status returned was: "The value could not be converted because of a potential loss of data.".

Please can you tell me what I need to do to make the import work?

Thanks

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Asked On
2009-10-06 at 12:28:27ID24790181
Tags

SSIS

,

SQL

,

csv

,

import

,

export

,

data conversion

,

datetime

,

DT_STR

Topics

SSIS

,

SQL Server 2008

,

SQL Server 2005

Participating Experts
1
Points
500
Comments
4

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Answers

 

by: necritPosted on 2009-10-06 at 21:01:52ID: 25512126

Quickest fix i know is to import it into a field with an appended value of _Import so TicketModifedDate_Import would be an example.  Then run an update query sqltask in the SSIS job that will do an update to the table where the import datafield is SET.  The below example code shows how you would first test your server to see if you can aptly transform the string to datetime.

Let me know if you have any questions

DECLARE
	@exDate_Import   varchar(32),
	@exDate          datetime
 
SET @exDate_Import = '2007-04-25 00:00:00.000'
 
SELECT CAST(SUBSTRING(@exDate_Import, 6, 2) + '/' + 
            SUBSTRING(@exDate_Import, 9, 2) + '/' + 
            SUBSTRING(@exDate_Import, 1, 4) + ' ' + 
            SUBSTRING(@exDate_Import, 12, 8) AS datetime)
 
--'Where there are two fields named exDate for the datetime
-- that will be used normally and exDate_Import which was
-- just dumped raw into the sql table'
UPDATE
    tbl_Name
SET
    exDate = CAST(SUBSTRING(exDate_Import, 6, 2) + '/' + 
            SUBSTRING(exDate_Import, 9, 2) + '/' + 
            SUBSTRING(exDate_Import, 1, 4) + ' ' + 
            SUBSTRING(exDate_Import, 12, 8) AS datetime)

                                              
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by: necritPosted on 2009-10-06 at 21:03:33ID: 25512133

Um...forgot to mention you'll be importing from DT_STR  to varchar(32) column that you create on the table.

 

by: qprjohn121Posted on 2009-10-07 at 13:16:30ID: 25519560

Hi necrit and thanks for your info. I would like to try out your solution but it seems quite complicated and doesn't appear to use functionality that is available within SSIS and without the need for coding, which I would prefer if possible.

In particular I was expecting the answer to make use of the Data Conversion component which sounds like exactly what I am trying to do.

Is there a simple way to use a Data Conversion component to read in a DT_STR column (from the Flat File Data Source component) and feed the OLEDB Destination component, such that it can populate a 'datetime' SQL field?

 

by: qprjohn121Posted on 2009-10-09 at 08:23:20ID: 31637895

Thanks, This looks like it will work but I havent tried it yet, I have discovered that the Derived Column Transformation within SSIS probably contains the solution, but I have not got it working yet. So I have today posted a new question that focuses more on the pursuit of a Derived Column solution, entitled:

'How to use SSIS Derived Column Transformation to load string into datetime SQL field'

20120131-EE-VQP-002

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