Oracle PL/SQL编程之包(packages) 1、简介 包用于在逻辑上组合过程和函数,它由包规范和包体组成。 我们可以使用create package来创建包,代码如下: ok,包创建完成,通过包的代码发现包的功能就是申明包中包含的过程和方法,红框申明包中包含一个参数为name和newSal的过程名为update_sal的函数。 绿框申明包中包含一...
Oracle PL/SQL编程之包(packages) 1、简介 包用于在逻辑上组合过程和函数,它由包规范和包体组成。 我们可以使用create package来创建包,代码如下: ok,包创建完成,通过包的代码发现包的功能就是申明包中包含的过程和方法,红框申明包中包含一个参数为name和newSal的过程名为update_sal的函数。 绿框申明包中包含一...
Enter value for cc_id: 1 Salary: 3000 PL/SQL procedure successfully completed. ExampleThe following program provides a more complete package. We will use the CUSTOMERS table stored in our database with the following records −Select * from customers; +---+---+---+---+---+ | ID | ...
later calls to related subprograms in the package require no disk I/O. Also, packages stop cascading dependencies and thereby avoid unnecessary recompiling. For example, if you change the implementation of a packaged function, Oracle need not recompile the calling subprograms because...
The first time you invoke a package subprogram, Oracle Database loads the whole package into memory. Subsequent invocations of other subprograms in same the package require no disk I/O. Packages prevent cascading dependencies and unnecessary recompiling. For example, if you change the body of a ...
Oracle专题——PL/SQL调试一般方法 在开发PL/SQL程序时,每个程序错误都有其特殊之处,这就使得程序的调试和测试技术面临挑战。虽然在开发过程中可以借助于测试来减少程序错误的数量,但是,如果能有效的调试PL/SQL程序,可以较大幅度提高开发效率及质量。以下为PL/SQL调试的一些方法: ...
Packages are schema objects that group logically related PL/SQL types, variables, functions and procedures. In Oracle, each package consists of two parts: package specification and package body. The package specification may contain variables and REF CURSOR in variables. The package REF CURSORs are ...
Oracle supplies a large number of both PL/SQL and Java packages, and this chapter focuses on the PL/SQL packages that DBAs can use to extend database functionality. Oracle implements most of the special features of the database with these PL/SQL packages. The number of Oracle-supplied PL/...
1.4. Using Packages Whether you are referencing an element in a builtin package, prebuilt package, or build-your-own package, the syntax is the same. One thing to remember is that a … - Selection from Advanced Oracle PL/SQL Programming with Packages [B
Oracle PL / SQL PL SQL Package Crosss reference between two packages SQL> SQL> create or replace package myPackage 2 as 3 PROCEDURE P1; 4 PROCEDURE P2; 5 PROCEDURE P3; 6 FUNCTION F1 return number; 7 FUNCTION F2 return number; 8 end; 9 / Package created. SQL> SQL> create or ...