我的编程空间,编程开发者的网络收藏夹
学习永远不晚

ORA-54018: A virtual column exists for this expression ORACLE 报错 故障修复 远程处理

短信预约 -IT技能 免费直播动态提醒
省份

北京

  • 北京
  • 上海
  • 天津
  • 重庆
  • 河北
  • 山东
  • 辽宁
  • 黑龙江
  • 吉林
  • 甘肃
  • 青海
  • 河南
  • 江苏
  • 湖北
  • 湖南
  • 江西
  • 浙江
  • 广东
  • 云南
  • 福建
  • 海南
  • 山西
  • 四川
  • 陕西
  • 贵州
  • 安徽
  • 广西
  • 内蒙
  • 西藏
  • 新疆
  • 宁夏
  • 兵团
手机号立即预约

请填写图片验证码后获取短信验证码

看不清楚,换张图片

免费获取短信验证码

ORA-54018: A virtual column exists for this expression ORACLE 报错 故障修复 远程处理

文档解释

ORA-54018: A virtual column exists for this expression

Cause: Specified index expression matches an existing virtual column”

Action: Re-issue the statment by replacing the index expression with the matching virtual column

ORA-54018是一个虚拟列错误。允许用户在表和视图上定义虚拟列,这些虚拟列的值是基于其他列的值计算得出的。当用户尝试将表中的表达式放进查询中时,将引发ORA-54018错误。

官方解释

ORA-54018: 发现虚拟列为此表达式

这些要求查询中不包含当前会话中定义的任何虚拟列。必须使用非虚拟列来替换虚拟列。当用户需要虚拟列的功能功能时,应在应用程序中处理它们,而不是在SQL语句中处理它们。

常见案例

ORA-54018错误通常发生在尝试在SELECT语句中使用虚拟列时。下面是一个示例:

CREATE TABLE student_info (

student_id number,

student_name VARCHAR2(50),

student_age number,

student_score number,

total_score AS (student_score + 100)

);

SELECT total_score FROM student_info;

一般处理方法及步骤

要正确处理ORA-54018错误,只需要重新构建查询,使用非虚拟列而不是虚拟列。下面是一个示例:

SELECT student_score + 100 AS total_score FROM student_info;

免责声明:

① 本站未注明“稿件来源”的信息均来自网络整理。其文字、图片和音视频稿件的所属权归原作者所有。本站收集整理出于非商业性的教育和科研之目的,并不意味着本站赞同其观点或证实其内容的真实性。仅作为临时的测试数据,供内部测试之用。本站并未授权任何人以任何方式主动获取本站任何信息。

② 本站未注明“稿件来源”的临时测试数据将在测试完成后最终做删除处理。有问题或投稿请发送至: 邮箱/279061341@qq.com QQ/279061341

ORA-54018: A virtual column exists for this expression ORACLE 报错 故障修复 远程处理

下载Word文档到电脑,方便收藏和打印~

下载Word文档

猜你喜欢

ORA-54018: A virtual column exists for this expression ORACLE 报错 故障修复 远程处理

文档解释ORA-54018: A virtual column exists for this expressionCause: Specified index expression matches an existing virtual
ORA-54018: A virtual column exists for this expression ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54012: virtual column is referenced in a column expression ORACLE 报错 故障修复 远程处理

文档解释ORA-54012: virtual column is referenced in a column expressionCause: This virtual column was referenced in an
ORA-54012: virtual column is referenced in a column expression ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-28083: A redacted column was referenced in a virtual column expression. ORACLE 报错 故障修复 远程处理

文档解释ORA-28083: A redacted column was referenced in a virtual column expression.Cause: This redacted column was
ORA-28083: A redacted column was referenced in a virtual column expression. ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54001: string: invalid identifier specified for virtual column expression ORACLE 报错 故障修复 远程处理

文档解释ORA-54001: string: invalid identifier specified for virtual column expressionCause: Column expression referenced a
ORA-54001: string: invalid identifier specified for virtual column expression ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54032: column to be renamed is used in a virtual column expression ORACLE 报错 故障修复 远程处理

文档解释ORA-54032: column to be renamed is used in a virtual column expressionCause: Attempted to rename a column that was
ORA-54032: column to be renamed is used in a virtual column expression ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54033: column to be modified is used in a virtual column expression ORACLE 报错 故障修复 远程处理

文档解释ORA-54033: column to be modified is used in a virtual column expressionCause: Attempted to modify the data type of
ORA-54033: column to be modified is used in a virtual column expression ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-28060: A data redaction policy already exists on this column. ORACLE 报错 故障修复 远程处理

文档解释ORA-28060: A data redaction policy already exists on this column.Cause: A data redaction policy was already in
ORA-28060: A data redaction policy already exists on this column. ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-02033: a cluster index for this cluster already exists ORACLE 报错 故障修复 远程处理

文档解释ORA-02033: a cluster index for this cluster already existsCause: A cluster index already exists for the
ORA-02033: a cluster index for this cluster already exists ORACLE 报错 故障修复 远程处理
2023-11-04

ORA-54030: datatype mismatch between virtual column and expression ORACLE 报错 故障修复 远程处理

文档解释ORA-54030: datatype mismatch between virtual column and expressionCause: virtual column expression was changed
ORA-54030: datatype mismatch between virtual column and expression ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54002: only pure functions can be specified in a virtual column expression ORACLE 报错 故障修复 远程处理

文档解释ORA-54002: only pure functions can be specified in a virtual column expressionCause: Column expression contained a
ORA-54002: only pure functions can be specified in a virtual column expression ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54011: expression column is not supported for a clustered table ORACLE 报错 故障修复 远程处理

文档解释ORA-54011: expression column is not supported for a clustered tableCause: Attempt to create/alter a clustered table
ORA-54011: expression column is not supported for a clustered table ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54010: expression column is not supported for a temporary table ORACLE 报错 故障修复 远程处理

文档解释ORA-54010: expression column is not supported for a temporary tableCause: Attempt to create/alter a temporary table
ORA-54010: expression column is not supported for a temporary table ORACLE 报错 故障修复 远程处理
2023-11-04

ORA-54003: specified data type is not supported for a virtual column ORACLE 报错 故障修复 远程处理

文档解释ORA-54003: specified data type is not supported for a virtual columnCause: Only scalar data types are supported for
ORA-54003: specified data type is not supported for a virtual column ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54025: Virtual column cannot have a default value ORACLE 报错 故障修复 远程处理

文档解释ORA-54025: Virtual column cannot have a default valueCause: Attempted to alter a virtual column to have a default
ORA-54025: Virtual column cannot have a default value ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54031: column to be dropped or modified is used in a virtual column expression ORACLE 报错 故障修复 远程

文档解释ORA-54031: column to be dropped or modified is used in a virtual column expressionCause: Attempted to drop or
ORA-54031: column to be dropped or modified is used in a virtual column expression ORACLE 报错 故障修复 远程
2023-11-05

ORA-39321: Cannot alter functional index or virtual expression column: string ORACLE 报错 故障修复 远程处理

文档解释ORA-39321: Cannot alter functional index or virtual expression column: stringCause: Altered column was referenced
ORA-39321: Cannot alter functional index or virtual expression column: string ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-44422: nonschema XML disallowed for this column ORACLE 报错 故障修复 远程处理

文档解释ORA-44422: nonschema XML disallowed for this columnCause: An attempt was made to insert nonschema based XML
ORA-44422: nonschema XML disallowed for this column ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-30985: The virtual XMLType column for chaining is missing ORACLE 报错 故障修复 远程处理

文档解释ORA-30985: The virtual XMLType column for chaining is missingCause: The virtual XMLType column for chaining was
ORA-30985: The virtual XMLType column for chaining is missing ORACLE 报错 故障修复 远程处理
2023-11-05

ORA-54038: Virtual column cannot be encrypted ORACLE 报错 故障修复 远程处理

文档解释ORA-54038: Virtual column cannot be encryptedCause: An attempt was made to create or alter a virtual column to have
ORA-54038: Virtual column cannot be encrypted ORACLE 报错 故障修复 远程处理
2023-11-04

ORA-22888: duplicate SCOPE clauses for a REF column ORACLE 报错 故障修复 远程处理

文档解释ORA-22888: duplicate SCOPE clauses for a REF columnCause: Multiple SCOPE clauses were specified for a single REF
ORA-22888: duplicate SCOPE clauses for a REF column ORACLE 报错 故障修复 远程处理
2023-11-05

编程热搜

  • Python 学习之路 - Python
    一、安装Python34Windows在Python官网(https://www.python.org/downloads/)下载安装包并安装。Python的默认安装路径是:C:\Python34配置环境变量:【右键计算机】--》【属性】-
    Python 学习之路 - Python
  • chatgpt的中文全称是什么
    chatgpt的中文全称是生成型预训练变换模型。ChatGPT是什么ChatGPT是美国人工智能研究实验室OpenAI开发的一种全新聊天机器人模型,它能够通过学习和理解人类的语言来进行对话,还能根据聊天的上下文进行互动,并协助人类完成一系列
    chatgpt的中文全称是什么
  • C/C++中extern函数使用详解
  • C/C++可变参数的使用
    可变参数的使用方法远远不止以下几种,不过在C,C++中使用可变参数时要小心,在使用printf()等函数时传入的参数个数一定不能比前面的格式化字符串中的’%’符号个数少,否则会产生访问越界,运气不好的话还会导致程序崩溃
    C/C++可变参数的使用
  • css样式文件该放在哪里
  • php中数组下标必须是连续的吗
  • Python 3 教程
    Python 3 教程 Python 的 3.0 版本,常被称为 Python 3000,或简称 Py3k。相对于 Python 的早期版本,这是一个较大的升级。为了不带入过多的累赘,Python 3.0 在设计的时候没有考虑向下兼容。 Python
    Python 3 教程
  • Python pip包管理
    一、前言    在Python中, 安装第三方模块是通过 setuptools 这个工具完成的。 Python有两个封装了 setuptools的包管理工具: easy_install  和  pip , 目前官方推荐使用 pip。    
    Python pip包管理
  • ubuntu如何重新编译内核
  • 改善Java代码之慎用java动态编译

目录