oracle检查regexp_like

发布于 2024-10-10 19:08:27 字数 617 浏览 6 评论 0原文

嘿，

我试图在 oracle 中使用 REGEXP_LIKE 进行约束，但我不断收到 ORA-00920: 无效关系运算符

错误，这是我的代码（错误位于 ck_files_name 约束的末尾

CREATE TABLE files(
  idFile INT PRIMARY KEY,
  idParent INT REFERENCES files,
  name VARCHAR2(256),
  type CHAR(1),

  CONSTRAINT ck_files_name  CHECK REGEXP_LIKE(name, '[^\.]'),    -- error ORA-00920:    invalid relational operator
  CONSTRAINT ck_files_type  CHECK type IN ('d', 'f'),
  CONSTRAINT ck_files_idFile_idParent CHECK (idFile <> idParent),
  CONSTRAINT uq_files_idFile_name UNIQUE (idParent, name)
);

，我做错了什么吗？这与我的 oracle 版本（oracle 10g xe）有关吗？

原文

hy,

I am trying to put a constraint with REGEXP_LIKE in oracle, but i keep geting a ORA-00920: invalid relational operator

error, here is my code (the error is at the end of the ck_files_name constraint

CREATE TABLE files(
  idFile INT PRIMARY KEY,
  idParent INT REFERENCES files,
  name VARCHAR2(256),
  type CHAR(1),

  CONSTRAINT ck_files_name  CHECK REGEXP_LIKE(name, '[^\.]'),    -- error ORA-00920:    invalid relational operator
  CONSTRAINT ck_files_type  CHECK type IN ('d', 'f'),
  CONSTRAINT ck_files_idFile_idParent CHECK (idFile <> idParent),
  CONSTRAINT uq_files_idFile_name UNIQUE (idParent, name)
);

Am I doing something wrong, or does it have to do with my oracle version (oracle 10g xe) ?

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软的没边 2024-10-17 19:08:27

您必须在 check 关键字后面添加括号。

以下内容至少适用于 Oracle 11 R2。

CREATE TABLE files(
  idFile INT PRIMARY KEY,
  idParent INT REFERENCES files,
  name VARCHAR2(256),
  type CHAR(1),
  CONSTRAINT ck_files_name  CHECK (REGEXP_LIKE(name, '[^\.]')),
  CONSTRAINT ck_files_type  CHECK (type IN ('d', 'f')),
  CONSTRAINT ck_files_idFile_idParent CHECK (idFile <> idParent),
  CONSTRAINT uq_files_idFile_name UNIQUE (idParent, name)
);

You have to put parantheses after the check keyword.

The following works, at least with Oracle 11, R2.

CREATE TABLE files(
  idFile INT PRIMARY KEY,
  idParent INT REFERENCES files,
  name VARCHAR2(256),
  type CHAR(1),
  CONSTRAINT ck_files_name  CHECK (REGEXP_LIKE(name, '[^\.]')),
  CONSTRAINT ck_files_type  CHECK (type IN ('d', 'f')),
  CONSTRAINT ck_files_idFile_idParent CHECK (idFile <> idParent),
  CONSTRAINT uq_files_idFile_name UNIQUE (idParent, name)
);

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泪意 2024-10-17 19:08:27

缺少括号。
试试这个：

CREATE TABLE files(
  idFile INT PRIMARY KEY,
  idParent INT REFERENCES files,
  name VARCHAR2(256),
  type CHAR(1),

  CONSTRAINT ck_files_name  (CHECK REGEXP_LIKE(name, '[^\.]')),    
  CONSTRAINT ck_files_type  (CHECK type IN ('d', 'f')),
  CONSTRAINT ck_files_idFile_idParent (CHECK (idFile <> idParent)),
  CONSTRAINT uq_files_idFile_name UNIQUE (idParent, name)
);

Paranthesis is missing.
Try this:

CREATE TABLE files(
  idFile INT PRIMARY KEY,
  idParent INT REFERENCES files,
  name VARCHAR2(256),
  type CHAR(1),

  CONSTRAINT ck_files_name  (CHECK REGEXP_LIKE(name, '[^\.]')),    
  CONSTRAINT ck_files_type  (CHECK type IN ('d', 'f')),
  CONSTRAINT ck_files_idFile_idParent (CHECK (idFile <> idParent)),
  CONSTRAINT uq_files_idFile_name UNIQUE (idParent, name)
);

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