Example: Add Column to Table
ALTER FOREIGN TABLE ParquetTab1 ADD GageHeight FLOAT;
Example: Change Character Set of Payload Column to UNICODE
ALTER FOREIGN TABLE JSONTab1 ADD Payload JSON(8388096) INLINE LENGTH 32000 CHARACTER SET UNICODE;
Example: Change Character Set of Payload Column to LATIN
ALTER FOREIGN TABLE JSONTab1 ADD Payload JSON(16776192) INLINE LENGTH 64000 CHARACTER SET LATIN;
Example: Drop Column from Table
ALTER FOREIGN TABLE ParquetTab1 DROP GageHeight;