如何在 Oracle 中创建自定义 CHECK

Question

我必须为我的项目创建一个数据库，我目前正在努力创建自定义检查。我想创建学生个人身份号码 (pesel) 的自定义检查，我希望它有 11 个字符长并且只有 0-9 的数字，我还想创建邮政编码检查以具有这种格式：“11- 111”。我在 Oracle SQL 开发人员工作。

这些是我试图添加的支票，但我在这两个支票中都遇到了同样的错误。

ALTER TABLE Address ADD CHECK (Zip_Code ~ '^[0-9]{2}-[0-9]{3}');

ALTER TABLE Students ADD CHECK (pesel ~ '^[0-9]*$');

这是我收到的错误：

Error starting at line : 1 in command -

ALTER TABLE Adress ADD CHECK (Zip_Code ~ '^[0-9]{2}-[0-9]{3}')

Error report -

00911. 00000 -  "invalid character"

*Cause:  
  The identifier name started with an ASCII character other than a
           letter or a number. After the first character of the identifier
           name, ASCII characters are allowed including "$", "#" and "_".
           Identifiers enclosed in double quotation marks may contain any
           character other than a double quotation. Alternate quotation
           marks (q'#...#') cannot use spaces, tabs, or carriage returns as
           delimiters. For all other contexts, consult the SQL Language
           Reference Manual.

*Action:  
 Check the Oracle identifier naming convention. If you are
           attempting to provide a password in the IDENTIFIED BY clause of
           a CREATE USER or ALTER USER statement, then it is recommended to
           always enclose the password in double quotation marks because
           characters other than the double quotation are then allowed.

Answer 1

如果模式正确，您将使用正则表达式，例如

ALTER TABLE Address ADD CHECK (regexp_like(address, '^[0-9]{2}-[0-9]{3}'));

如何在 Oracle 中创建自定义 CHECK

How to create a custom CHECK in Oracle

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