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AJAJ's avatar
AJAJ
Helper IV
7 months ago

Same SQL Source table - ADF Copy Activity Succeeds but Fabric Copy Activity Fails- Auto create table

Hi there,

 

I'm using dynamic query to loop thru processing multiple tables. Source is SQL Server.


Same table / Same query / Same SQL Source - Older ADF copy activity runs successfully.

Fabric copy activity errors out - Something is wrong. Production also has the column delivery_instructions1 as varchar(20) and runs fine. Not sure why fabric is crying.

Fabric pipeline execution failed, error message received from failing pipeline - 'Operation on target CopySourceData failed: ErrorCode=DWCopyCommandOperationFailed,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message='DataWarehouse' Copy Command operation failed with error 'String or binary data would be truncated while reading column of type 'VARCHAR(20)'. Check ANSI_WARNINGS option. Underlying data description: file 'https://olsby4qhfhvxxxdfs.core.windows.net/e6913139-a2f675-d8df0be00770/da590d8b-xxxx9703-8e1f4e17e2b0/Staging/33a20dec-xxxx6d-81efffb0c33e/MSSQLImportCommand/data_33a20dec-48cb-4eff-836d-81efffb0c33e_xxx547-b7cd-01b8b3a43f8a.parquet', column 'delivery_instructions1'. Truncated value: 'Contact: Jorge – 8'.
Statement ID: {4AFB2C23-E271-xx6A8B15EA8} | Query hash: 0xA4B38D547F0BF881 | Distributed request ID: {255xxx0-44A1-A86B-DA03E89D4C1C}'.,Source=Microsoft.DataTransfer.Connectors.MSSQLImport,''Type=Microsoft.Data.SqlClient.SqlException,Message=String or binary data would be truncated while reading column of type 'VARCHAR(20)'. Check ANSI_WARNINGS option. Underlying data description: file 'https://olsby4qhfhxxxxuzhk.dfs.core.windows.net/e6913139xxxxe-9595-d8df0be00770/da590d8b-cdf5-426a-9703-8e1f4e17e2b0/Staging/33a20dec-48cb-4exxxfffb0c33e/MSSQLImportCommand/data_33a20dec-48cb-4eff-836d-81efffb0c33e_3xxx4547-b7cd-01b8b3a43f8a.parquet', column 'delivery_instructions1'. Truncated value: 'Contact: Jorge – 8'.
Statement ID: {4AFB2C23-E271xxxxx6A8B15EA8} | Query hash: 0xA4B38D547F0BF881 | Distributed request ID: {255787xxxx0-44A1-A86B-DxxxxC1C},Source=Framework Microsoft SqlClient Data Provider,''

16 Replies

  • Hi AJAJ

     

    The error is pretty clear: String or binary data would be truncated while reading column of type 'VARCHAR(20)'

    You have an issue with column mappings, and data is being truncated. 

    You need to adjust the column mappings to ensure that data is not getting truncated. 

     

     

    • AJAJ's avatar
      AJAJ
      Helper IV

      tayloramy Thanks Taylor. Like i said, same identical pipeline is running fine in existing ADF (same source, same table, same everything) but few tables is not working in fabric. Nothing hardcoded in column mapping. multiple tables get processed by 1 pipeline. Fabric has processed other tables successfully. Data values are not exceeding.

      The error is not correct. What i mean is if you connec the same table via ADF it runs fine but not in fabric. no mapping since many tables are processed by 1 pipeline. am i missing anything?


      • tayloramy's avatar
        tayloramy
        Super User

        Hi AJAJ

         

        Azure Data Factory may just truncate the data without throwing an error. Fabric Data Factory does not, it will fail instead of allowing the data to truncate. 

         

         

  • v-prasare's avatar
    v-prasare
    Community Support

    Hi AJAJ,

    We would like to confirm if our community members answer resolves your query or if you need further help. If you still have any questions or need more support, please feel free to let us know. We are happy to help you.


    tayloramy  ,Thanks for your prompt response

     

     

    Thank you for your patience and look forward to hearing from you.
    Best Regards,
    Prashanth Are
    MS Fabric community support

  • I agree tayloramy , i got access to source SQL server and narrowed down on table.

    Copy Activity Error Column 'delivery_instructions1'. Truncated value: 'Contact: Jorge – 8'. 

     

    deliver_instruction1 at source SQL table is varchar(20). I compared table structure side by side (SQL Server vs WH) and they are identical but fails with above error.

    Value is 'Contact: Jorge – 832' - varchar(20). 

     

    All checks out fine. Not sure why its reporting about issues. when everything is to the dot. There are other tables running fine and few tables are having issues. Out 4 tables out of 93 ingestion tables. and have no idea why.

     

    There are some 45 columns in total on this 1 table.

    • tayloramy's avatar
      tayloramy
      Super User

      Hi AJAJ

       

      Interesting. I wonder if that em-dash is taking up more bytes in the fabric implementation. 

      If you set the target to be a varchar(25) or 30, does it work then? 


      If not. I think a ticket with mirosoft would be helpful here. Something is up.  

      • AJAJ's avatar
        AJAJ
        Helper IV

        Yes when i manually widended the target table column and it ran fine. Cant be declaring source table structures manually (each table has many columns so even if one column is casted to varchar greater than source, another column creates issue.) copy activity should autodetect especially when source is a SQL server. 

        Something is a bug. i wish someone from microsoft could take a look. I used trial version and paid version too. Both have same issue. I have worked on Azure copy activity for 5 yrs using various sources. Never came across this issue. i created this fabric pipeline from scratch multipletimes.. 

         

        95 tables to be processed - lookup and foreach loop thru with appropriate select statement (eg select col1, col2 from tableA and so on)  on copy activity.

         

        18 tables are causing similar error. 

         

         

         

        Verified len of Source SQL server tables and values. Fabric is turning out to be a crapy show here.

         

        Same thing with reading pipedelimited csv files. Some files are fine but are having issues with copy activity while sames files runs smoothly in ADF.

  • v-prasare's avatar
    v-prasare
    Community Support

    Hi AJAJ,

    We are following up once again regarding your query. Could you please confirm if the issue has been resolved through the support ticket with Microsoft?
    If the issue has been resolved, we kindly request you to share the resolution or key insights here to help others in the community. If we don’t hear back, we’ll go ahead and close this thread.
    Should you need further assistance in the future, we encourage you to reach out via the Microsoft Fabric Community Forum and create a new thread. We’ll be happy to help.

    Thank you for your understanding and participation.

    Prashanth

    MS Fabric community support