SSIS: Unicode And Non-unicode String Data Types

May 14, 2008

Hi guys and gals,

I've had some great headaches with SSIS this morning, which I have managed to get a workarounds for, but I'm not happy with them so I've come to ask for advice.

Basically, I am exporting data from an SQL Server database into an Excel spreadsheet and hitting issues with unicode and non-unicode data types.

For example, I have a column that is char(6) and have added a data conversion step to the data flow, which converts it to type DT_WSTR and then everything works!

However, this seems like a completely un-neccessary step as I should be able to do the conversion in T-SQL - but no matter what I try I keep getting the same problem.

SELECT Cast(employee_number As nvarchar(255)) As [employee_number]
FROM employee
WHERE forename = 'george'

ErrorValidation error. details: 1 [1123]: Column "employee_number" cannot convert between unicode and non-unicode string data types.

I know I have a solution (read: workaround) but I really don't want to do this everytime!

Any suggestions for what else to try?

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I am following the SSIS overview video- URL...I have a flat file that i want to import the contents onto a SQL database.I created a Dataflow task, source file and oledb destination.I am getting the folliwung error -"column "A" cannot convert between unicode and non-unicode string data types".in the origin file the data type is coming as string[DT_STR] and in the destination object it is coming as "Unicode string [DT_WSTR]"I used a data conversion object in between, dosent works very well

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Excel Destination Error: Columnxx Cannot Convert Between Unicode And Non-unicode String Data Types

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Good afternoon

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I have an Excel Source component hooked to an OLE DB Destination component in my SSIS 2005 Data Flow Task.  After I mapped the excel columns to the OLE DB table columns i get these errors below.  I noticed that for the first error, the Excel Field format (when you mouse over the column name in the mappings section in OLE DB component) is of type [DTWSTR] and the corresponding SQL field from my SQL table that it's mapping to is of type [DT_STR] when mousing over that field in the mappings in the properties of my OLE DB component.  All table fields in SQL Server for the table I'm inserting into are of type varchar.

print screens here:

http://www.webfound.net/excel_ssis.jpg

http://www.webfound.net/excel_to_oledb_mappings.jpg

Package Validation Error

------------------------------
ADDITIONAL INFORMATION:

Error at Data Flow Task [OLE DB Destination [27]]: Columns "Commission Agency" and "CommissionAgency" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [OLE DB Destination [27]]: Column "Product" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [OLE DB Destination [27]]: Columns "Officer Code" and "OfficerCode" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [OLE DB Destination [27]]: Columns "Agency Name" and "AgencyName" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [OLE DB Destination [27]]: Columns "Agency Id" and "AgencyID" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [OLE DB Destination [27]]: Columns "Tran Code" and "TranCode" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [OLE DB Destination [27]]: Columns "User Id" and "UserID" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [OLE DB Destination [27]]: Columns "Acct Number" and "AccountNumber" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [DTS.Pipeline]: "component "OLE DB Destination" (27)" failed validation and returned validation status "VS_ISBROKEN".

Error at Data Flow Task [DTS.Pipeline]: One or more component failed validation.

Error at Data Flow Task: There were errors during task validation.

 (Microsoft.DataTransformationServices.VsIntegration)

 

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Cannot Convert Between Unicode And Non-unicode String Data Types

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Hi,

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So, I have 2 Data Conversions working here that process most of the data correctly. What I can do to load the DESCRIPTION column?

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I'm having this problem.

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The table in SQL Server database has collation Latin1_General_CI_AS and one of the columns is a NVARCHAR with collation Indic_General_90_CI_AS. This should be a Unicode only collation. However when storing for instance the following String:




‚¬_£_ÙÚÜÛùúüû_ÅÆØåæøߣÇçÑñ_¼½¾_ЎўЄєÒ?Ò‘_прÑ?туф_ЂЉЊЋ
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Codepage 0 is not supported by the Java environment.




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TITLE: Package Validation Error
------------------------------

Package Validation Error

------------------------------
ADDITIONAL INFORMATION:

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 0" and "AccountNumber" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 1" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 2" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 3" and "Name" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 4" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 5" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 6" and "ExpiryDate" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 7" and "RateType" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 8" can't be inserted because the conversion between types DT_STR and DT_BOOL is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 9" and "FullName" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 10" and "Address" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 11" can't be inserted because the conversion between types DT_STR and DT_DBTIMESTAMP is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 12" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 13" can't be inserted because the conversion between types DT_STR and DT_DBTIMESTAMP is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 14" and "Occupancy" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 15" and "LoanPurpose" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 16" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 17" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 18" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 19" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 20" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 21" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 22" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 23" and "DocumentLocation" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 24" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 25" and "SecurityType" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 26" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 27" can't be inserted because the conversion between types DT_STR and DT_DBTIMESTAMP is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 28" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 29" and "MortgageInsurancePolicyNumber" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 30" and "SecurityAddress" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 31" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 32" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 33" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 34" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 35" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 36" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 37" can't be inserted because the conversion between types DT_STR and DT_DBTIMESTAMP is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 38" and "SecuritySuburb" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 39" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 40" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 41" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 42" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 43" and "MortgageNumber" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: Columns "Column 44" and "TitleParticulars" cannot convert between unicode and non-unicode string data types.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 45" can't be inserted because the conversion between types DT_STR and DT_DBTIMESTAMP is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 46" can't be inserted because the conversion between types DT_STR and DT_DBTIMESTAMP is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 47" can't be inserted because the conversion between types DT_STR and DT_DBTIMESTAMP is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 48" can't be inserted because the conversion between types DT_STR and DT_I4 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 49" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 50" can't be inserted because the conversion between types DT_STR and DT_R8 is not supported.

Error at Data Flow Task [SQL Server Destination [174]]: The column "Column 51" can't be inserted because the conversion between types DT_STR and DT_DBTIMESTAMP is not supported.

Error at Data Flow Task [DTS.Pipeline]: "component "SQL Server Destination" (174)" failed validation and returned validation status "VS_ISBROKEN".

Error at Data Flow Task [DTS.Pipeline]: One or more component failed validation.

Error at Data Flow Task: There were errors during task validation.

 (Microsoft.DataTransformationServices.VsIntegration)

------------------------------
BUTTONS:

OK
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May 1, 2007

All:



When creating a package, SSIS assumes varchar columns as Unicode (DT_WSTR) so before loading data into the target tables, I have to perform a data conversion from DT_WSTR to DT_STR.



Is there any way to turn UNICODE off? So I do not need to do the conversion? Please advise...



Rohan

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Converting String To Unicode String In T-SQL

Mar 26, 2007

Hi,We have stored proc name proc_test(str nvarchar(30)). So far this prochas been invoked from a .NET application assuming that only Englishcharacter strings will be passed to it. The calls are likeproc_test('XYZ')We now have a requirement for passing Chinese strings as well. Ratherthan changing the calls throughout the application, we would like tohandle it in the stored procedure so that it treats the string as aunicode string. Can we apply some function to the parameter to convertit to unicode so that we don't have to call with an N prefixed to thestring?Thanks,Yash

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SSIS - Unicode Conversion Failed

Feb 4, 2008



Hello,

I have a ssis package that I created in the BIDS and run through a job.
the package was running very good all the time, till yesterday, when I changed the
default language of my server to hebrew (its an hebrew website).
now I get this error:




Code SnippetError: 0xC002F325 at CopyTables1, Transfer SQL Server Objects Task: Execution failed with the following error: "ERROR : errorCode=-1071636471 description=SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80004005.
An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80004005 Description: "Unicode conversion failed".
helpFile=dtsmsg.rll helpContext=0 idofInterfaceWithError={8BDFE893-E9D8-4D23-9739-DA807BCDC2AC}".
Task failed: CopyTables1






how can I fix this error witout changing the language of the server?

Thanks.

The Kubyustus

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Why Does SSIS Think DBASE III Tables Are Unicode?

Aug 24, 2007



Due to some legacy requirements, I'm using an OLEDB connection with the Jet driver and creating dBASE III tables (.DBFs) as the destination for a data export. The source is SQL Server 2000. The SQL table has a bunch of varchar columns, and I can't send them directly to the .DBF because SSIS complains that it can't (implicitly) convert from non-Unicode to Unicode. UNICODE?! dBASE III is ancient. Why would Jet/SSIS assume that these .DBFs are Unicode? As it stands, I have to put a data conversion task between the source and destination and convert all the columns. It's a real pain.

And no, I don't want to make all my SQL Server columns nvarchar. Is there any setting I can put in the connection manager or the connection string to prevent this error? I've already set AlwaysUseDefaultCodePage to True on the OLEDB destination component and the default code page is 1252. That didn't work; I still got the can't convert error.

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