PRAGMA EXCEPTION_INIT 是Oracle PL/SQL 中的一个指令,用于将一个用户定义的异常与 Oracle 预定义的异常或特定的错误代码关联起来。这允许开发者为特定的错误条件创建更具可读性和维护性的异常处理逻辑。 2. 阐述PRAGMA EXCEPTION_INIT的语法结构 PRAGMA EXCEPTION_INIT 的语法结构如下: plsql PRAGMA EXCEPTION_INIT ...
原来有些oracle error是没有名字的,这些error可以通过pragma来在编译的时候将名字和具体错误链接在PL/SQL中 pragma exception_init告诉编译器e_integrity是和oracle error 2291联系在一起的。语法是 PRAGMA EXCEPTION_INIT(错误名, -错误号);exception_name is the name of a previously declared exception and the ...
本文介绍 Oracle SQL Server 迁移助手 (SSMA) 无法转换EXCEPTION_INIT的原因。 背景 异常处理是一种编程语言构造或机制,旨在处理异常的发生、更改程序执行正常流的特殊条件。 可以使用该 PRAGMA EXCEPTION_INIT 名称将异常名称与其他可以预测的 Oracle 错误代码相关联。 知道错误代码后,可以将其用于 PRAGMA EXCEPTION_...
The EXCEPTION_INIT pragma should only be used to associate an exception with an error number that is already meaningfully defined by Oracle. Note that any error number may be used by Oracle in the future, which can create conflicts with unrelated application use of that number. Negative intege...
PRAGMA EXCEPTION_INIT声明可包含在任何块、子块或包中。只能在声明异常后将错误代码分配给该异常(使用PRAGMA EXCEPTION_INIT)。 语法 PRAGMA EXCEPTION_INIT声明的格式如下: PRAGMA EXCEPTION_INIT(exception_name, {exception_number | exception_code}) 其中: exception_name是关联异常的名称。 Exception_number是用户...
PRAGMA EXCEPTION_INIT,PolarDB:PRAGMA EXCEPTION_INIT associates a user-defined error code with an exception. A PRAGMA EXCEPTION_INIT declaration may be included in any block, sub-block, or package. You can only assign an error code...
For example, In PL/SQL, the pragma EXCEPTION_INIT tells the compiler to associate an exception name with an Oracle error number. === That allows you to refer to any internal exception by name and to write a specific handler for it.: DECLARE deadlock...
'## AddReference C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\System.Data.OracleClient.dll '## AddReference "System.EnterpriseServices, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" You typically specify the assembly’s display name for assemblies stored in the GAC. Apply...
For more information, seeOracle Database Application Developer's Guide - Fundamentals. Syntax Keyword and Parameter Description DEFAULT Specifies that the pragma applies to all subprograms in the package spec or object type spec. You can still declare the pragma for individual subprograms. Such pragma...