Oracle® Database 8i | 9i | 10g | 11g | 12c | 18c | 19c Error Codes
Information for Database Error Code ORA-54009: expression column is not supported for an external table
ORA-54009: expression column is not supported for an external table
Cause: Attempt to create/alter an external table with an expression column
Action: These columns are not supported, change the DDL.
Error Type: ORA
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