ORA-42303：duplicate column reference in a definition of an Editioning view
错误码
错误描述：duplicate column reference in a definition of an Editioning view
错误原因：An attempt was made create an Editioning view referencing the same column of a base table more than once, which is not supported.
解决方法：Do not create an Editioning view if you have multiple columns referring to the same column of the base table.
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