Empty string values convert to NULL values when saving a table as CSV or text-based file format

Problem  When saving a table as a CSV file or other text-based format, your empty string values are replaced with  NULL values.  Cause Empty string values are interpreted as  NULL during the Serialization/Deserialization (SerDe) step when saving tables as CSV files or other text-based data formats which do not have a defined schema present.  NULL va...

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