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...
--IN 下限 1,上限10 “REVERSE” 代表递减,如果去掉“REVERSE”的话,就是打印1,2,3...10; BEGIN FOR i IN REVERSE 1..10 LOOP DBMS_OUTPUT.PUT_LINE(i); END LOOP; END; 1. 2. 3. 4. 5. 6. 7. PL/SQL的嵌套循环与退出语句 嵌套循环和标号 嵌套循环是指在一个循环语句中嵌入另一个循环语句...
对程序包的优点可总结如下:在PL/SQL程序设计中,使用包不仅可以使程序设计模块化,对外隐藏包内所使用的信息(通过使用私用变量),而写可以提高程序的执行效率。因为,当程序首次调用包内函数或过程时,ORACLE将整个包调入内存,当再次访问包内元素时,ORACLE直接从内存中读取,而不需要进行磁盘I/O操作,从而使程序执行效率得...
Starting with Oracle Database 19c, Release Update 19.23, the initialization parameterSESSION_EXIT_ON_PACKAGE_STATE_ERRORallows you to specify behavior in the event package state is invalidated. When a stateful PL/SQL package undergoes modification, the sessions that have an active instantiation of th...
Chapter 17. Packages A package is a grouping or packaging of PL/SQL code elements. Packages provide a structure (both logically and physically) in which you can organize your programs and … - Selection from Oracle PL/SQL Programming, Third Edition [Boo
Changes in Oracle Database 12c Release 2 (12.2) The following are changes inOracle Database PL/SQL Packages and Types Referencefor Oracle Database 12c Release 2 (12.2). New Features Deprecated Features Desupported Features New Features The following features are new in this release: ...
I assumed that we already have CUSTOMERS table created in our database as mentioned in the PL/SQL - Variables chapter.CREATE OR REPLACE PACKAGE BODY cust_sal AS PROCEDURE find_sal(c_id customers.id%TYPE) IS c_sal customers.salary%TYPE; BEGIN SELECT salary INTO c_sal FROM customers WHERE ...
Storing PL/SQL function in the Database : Function « Function Procedure Packages « Oracle PL/SQL TutorialOracle PL/SQL Tutorial Function Procedure Packages Function create [or replace] function function name (parameters) return ... is ... begin ... end; ...
Chapter 8. PLVtab: Easy Access to PL/SQL Tables The PLVtab (PL/Vision TABle) package offers predefined PL/SQL table types and programs to make it easier to declare, use, and display the … - Selection from Advanced Oracle PL/SQL Programming with Package
Advanced CSV - Efficiently format, edit, arrange, and evaluate cells in CSV filesAdvanced PLSQL - Advanced Sublime Text package for editing and building Oracle SQL and PL/SQLAdvanced Substation Alpha (ASS) - ASS/SSA subtitles syntax highlight for Sublime Text.AdvancedNewFile - File creation ...