KUP-04070：field string referenced by column transform string not found\n
错误码
错误描述：field string referenced by column transform string not found\n
错误原因：The column transform for the named column references a field that did not exist anywhere in the definition of the data file.
解决方法：Verify that the column transform clause is specified correctly. Also verify that the field definitions for the data file are correct.
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