SSIS: Cannot convert between unicode and non-unicode string data types during import

Here is an issue you may receive if you try to import data from an Excel spreadsheet into a Sql Server database table:

 

Error at Data Flow Task [OLE DB Destination [23]]: Columns “firstname” and “FirstName” cannot convert between unicode and non-unicode string data types.

Continue reading SSIS: Cannot convert between unicode and non-unicode string data types during import

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