I have a notepad file
While uploading data from import and export wizard ,
I face below error
And also while creation of the table i have edited the table structure to make every field to be ntext data type still i am getting error.
From errors you might have 2 issues:
Probably you have some characters not fitting into code page
Field is too short and you have too long data
Probably 2nd error is causing the other. Unfortunally weak error reporting is one of side effects using SSIS.
And little advise, don't use NTEXT rather NVARCHAR instead. It easier to work with NVARCHAR:
nvarchar(max) vs NText
Make your table to use nvarchar(max) instead.
Instead of using import/export wizard, write a SSIS package and add a data conversion transformation in the data flow task between the source and destination. Use unicode string in the conversion transformation.
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Sumit
Related
I am trying to import the data from the flat file into the Azure SQL database table and I have a merge to merge with another source too. But when I map the fields from the flat file to the Azure SQL database I keep getting the error like
Column "Location" cannot convert between unicode and non-unicode string data types
Upon looking at some forums I tried to change the data type of the field to Unicode string[DT_WSTR] and even I tried to have string [DT_STR]
The Destination Azure SQL database below is the Location field
Can anyone please suggest what I am missing here? Any help is greatly appreciated
Changing the columns data types from the component's advanced editor will not solve the problem. If the values imported contain some Unicode characters, you cannot convert them to non-Unicode strings, and you will receive the following exception. Before providing some solution, I highly recommend reading this article to learn more on data type conversion in SSIS:
SSIS Data types: Change from the Advanced Editor vs. Data Conversion Transformations
Getting back to your issue, there are several solutions you could try:
Changing the destination column data type (if possible)
Using the Data conversion transformation component, implement an error handling logic where the values throwing exceptions are redirected to a staging table or manipulated before re-importing them to the destination table. You can refer to the following article: An overview of Error Handling in SSIS packages
From the flat file connection manager, got to the "Advanced Tab", and change the column data type to DT_STR.
It seems that the answer to this question should already be out there, but after some hours of experimentation I have yet to find a solution that works. What I'm looking to do is insert into an MSSQL database a record that includes a VARBINARY(MAX) column. The source of the data is a BLOB column from an SQLite database, also ready using SQLAlchemy and which appears to be rendered as a Python string. Whatever I try I still seem to received the following message:
'Implicit conversion from data type varchar to varbinary(max) is not
allowed. Use the CONVERT function to run this query.
I can see that what is required (or at least what seems to work if I try it manually) at the SQL level is to wrap the bound column in CONVERT(VARBINARY(MAX), ...) but making SQLALchemy do this has so far frustrated me.
Thanks in advance as always.
I have quite a few tables and I'm using SSIS to bring the data from Oracle to SQL Server, in the process I'd like to convert all varchar fields to nvarchar. I know I can use the Data Conversion transformer but it seems the only way to do this is to set each field one by one, then I'll have to manually set the mapping in the destination component to map to the "Copy of" field. I've got thousands of fields and it would be tedious to set it on each one... is there a way to say "if field is DT_STR convert to DT_WSTR"?
what you can do is, instead of replacing varchar with nvarchar manually before running the script is copy and save all the create table scripts generated by SSIS to a document. Then you can do a global replace nvarchar x varchar in the document.
Use then the amended script as a step in your SSIS package to create the tables before populating them with the data from Oracle.
The proper way is to use the data conversion step...
That said, it appears if you disable external meta data validation in SSIS, you can bypass this error. SQL will then use an implicit conversion to the destination type.
See this SO post for a quick explanation.
I am connecting to an Oracle DB and the connection works, but I get the following error for some of the columns:
Description: Column "RESOURCE_NAME" cannot convert between unicode
and non-unicode string data types.
Value for RESOURCE_NAME:
For Oracle: VARCHAR2(200 BYTE)
For SQL Server: VARCHAR(200 BYTE)
I can connect to the Oracle DB via Oracle SQL Developer without any issues. Also, I have the SSIS package setting Run64BitRuntime = False.
The Oracle data type VARCHAR2 appears to be equivalent to NVARCHAR in SQL Server, or DT_WSTR in SSIS. Reference
You will have to convert using the Data Conversion Transformation, or CAST or CONVERT functions in SQL Server.
If the package works in one machine and doesn't in other; Try setting the NLS_LANG to right language, territory and character set and test the package.
[Command Prompt]> set NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P1
The easiest way around this to to open the SSIS package in notepad (the dtsx file) and do a global find and replace of all instances of validateExternalMetadata="True" with validateExternalMetadata="False".
note: we encountered this issue when connecting to an Oracle 11g database on Linux through SSIS.
on oledb source ->advanced editor options->input/output columns->output columns->select RESOURCE_NAME column and change Data type as DT_WSTR and length also u can change as required
You can use SQL command in SSIS and use CONVERT or CAST. If SSIS still gives you an error its because of the metadata. Here is how you can fix it.
Open the Advanced Editor.
Under the Input and Output properties, Expand Source Output.
Expand Output columns
Select the column which is causing the issue.
Go to Data Type Properties and change the DataType to your desired type DT_STR, DT_Text etc.
You can just double-click on the "Data Conversion" block in the Data Flow and for every item change it to: "Unicode String [DT_WSTR]"
Works
If everything failed from above. Create a table variable and insert the data into it. Then select all records as source. use SET NOCOUNT ON in the script.
I encountered a very similar problem even using SQL Server rather than Oracle. In my case, I was using a Flat File as a data source, so I just went in to the Flat File Connection Manager and manually changed the column type to be a Unicode string:
I don't know if this would fix your problem or not, but it helped me - hopefully someone else will be helped too. (I was inspired to try that by this previous answer to this question BTW, just to give credit where credit's due).
Halfway through a SSIS project certain table fields changed from char(30) to nvarchar(30)
However, when running the SSIS packages, an error stating cannot convert from unicode to non-unicode appears.
I am trying to transfer data directly from a database source to its destination.
Both connections use the same database schema, so there should be no conversion.
When checking the external column data type it shows D_STR, which is not the case anymore.
I tried deleting both source and destination in hope that it would clean any sort of cached data, but it did not work.
Any ideas?
Sounds to me like the metadata in your data flow task is cached and needs to be refreshed to reflect the new type.
Open the source, go to columns, and uncheck the column, then check the column. Click ok. The metadata should refresh now.
nvarchar and nchar are unicode. Conversely, varchar and char are non-unicode.
http://msdn.microsoft.com/en-us/library/ms187752.aspx
As a result if you are moving data from one data type to another you will have to perform some additional transformation (CAST or CONVERT). The other option is to look at your adapters such that char will use SSIS DataType of DT-STR and nvarchar will use SSIS DataType DT-WSTR
http://msdn.microsoft.com/en-us/library/ms141036.aspx
Without knowing how your packages work I cannot be much more specific but hopefully this will get you going.