This is an in-depth series covering almost all Oracle Interview questions: Part #1:Oracle Basic, SQL, PL/SQL Questions(this article) Part #2:Oracle DBA, RAC, and Performance Tuning Questions Part #3:Oracle Forms and Reports Interview Questions Part #4:Oracle Apps and Oracle SOA Technical Int...
·函数:Create or replace function funcname(参数列表) return返回值as PL/SQL语句块 5.游标的定义为:用游标来指代一个DML SQL操作返回的结果集。即当一个对数据库的查询操作返回一组结果集时,用游标来标注这组结果集,以后通过对游标的操作来获取结果集中的数据信息。这里特别提出游标的概念,是因为它在PL/SQL...
PL/SQL Basic --PL/SQL块结构DECLARE/**定义部分-定义常量,变量,复杂数据类型,游标。 可选 没有;*/BEGIN/**执行部分-sql语句 必须 没有;*/EXCEPTION/**例外处理部分-处理运行错误 可选 没有;*/END;/*块结束标志 必须;*/setserveroutputonBEGINDBMS_OUTPUT.PUT_LINE('Hello');END;DECLAREv_enameVARCHAR(...
所有的SQL数据操作语句都可以用于执行部分,PL/SQL块不能在屏幕上显示SELECT语句的输出。SELECT语句必须包括一个INTO子串或者是游标的一部分,执行部分使用的变量和常量必须首先在声明部分声明,执行部分必须至少包括一条可执行语句,NULL是一条合法的可执行语句,事物控制语句COMMIT和ROLLBACK可以在执行部分使用,数据定义语言DDL...
The programming statements that can be used in a PL/SQL application include: assignment, DELETE, EXECUTE IMMEDIATE, INSERT, NULL, SELECT INTO, and UPDATE.
The programming statements that can be used in a PL/SQL application include: assignment, DELETE, EXECUTE IMMEDIATE, INSERT, NULL, SELECT INTO, and UPDATE.
PL/SQL Multiple-Choice Questions (MCQs)PL/SQL stands for "Procedural Language Extension of SQL". PL/SQL uses a block-structured syntax. Each of the logical blocks of PL/SQL can be nested into any number of subblocks.This section contains the PL/SQL MCQs on various topics such as ...
Environment Set Up Of PL SQL Oracle Database Connection Basic Syntax Of PL SQL Programs In PL/SQL Frequently Asked Questions And Answers Conclusion Was this helpful? Recommended Reading List Of PL/SQL Tutorials Tutorial #1:PL SQL Tutorial For Beginners With Examples | What Is PL/SQL(This Tutori...
POSTGRESQL 检索结果一次只出50件 plsql全文检索 一、使用 sys 用户登录oracle (1)运行—cmd—sqlplus — sys/密码 @连接字符 as sysdba 二、授权 1、grant ctxapp to 全文检索使用用户; 2、grant execute on ctx_dll to 全文检索使用用户; 3、全文检索使用用户 登录oracle 可以通过 pl/sql 界面登录;以下操作...
In PL/pgSQL an assignment of a value to a variable is written as: variable:= expression; Here is an example: Examples: tax:= subtotal * 0.04; my_record.user_id := 30; Executing a command with no result There are some SQL commands that does not return rows, for example, INSERT wit...