ORA-39321：Cannot alter functional index or virtual expression column
错误码
错误描述：Cannot alter functional index or virtual expression column
错误原因：Altered column was referenced in a virtual column or functional index expression. There is no SQL ALTER statement to change a column which is referenced in one of these types of expressions.
解决方法：The difference cannot be eliminated with a SQL ALTER statement.
向认证技术专家提问
向技术专家提问
