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Error Comparing DB1 vs DB2. Cannot insert the value NULL into column 'YourColumn', table 'database.dbo.tmp_rg_xx_MyTable'; column does not allow nulls. INSERT fails

This error occurs when adding a new column to an already populated table, and the new column does not allow null values.

To fix this:

  • assign a default value to the column in the source database, or
  • set the column to allow nulls, and then set it back after you have the correct data inserted.

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