what ref cursor

There are two types of cursors in Oracle: Explicit cursors, implicit cursors. The display cursor is a cursor defined with the cursor...is command, which can process multiple records returned by a query statement (SELECT), whereas an implicit cursor

An explicit cursor Implicit cursors: If you operate with a SELECT statement in a PL/SQL program segment, PL/SQL implicitly handles the cursor definition, which is an implicit cursor. This type of cursor does not need to be declared as explicitly

Variable introduction when writing a PL/SQL program, you can define variables and constants, including: 1 in a PL/SQL program, scalar type (scalar) 2), composite type (composite)--for manipulating a single record 3), reference type (reference)--

A dynamic cursor can traverse a dynamic table,Format: is CURSOR; -- Defining a dynamic cursorcursor name cursor type;If the data of the queried table is different, dynamically changing, this time can be used with dynamic cursors.It is important to

 1. Previous section ReviewIntroduction of 2.pl/sqlThe foundation of 3.pl/sqlUnderstanding Oracle's PL/SQL conceptsMaster PL/SQL Programming techniques (including writing processes, functions, triggers, packages ...) ）What is PL/SQL?PL/SQL

In order to handle the information obtained by the SQL statements, Oracle must allocate a region called the context to handle the above information. A cursor is a handle or pointer to a context, and PL/SQL can control the information that is

Preparations before Case demonstration: -- alter system flush shared_pool;-- Set timing on;-- Starting from an empty sharing pool, if you operate these test statements multiple times, you need to clear the sharing pool each time,Otherwise, the

Create a stored procedure for quick display of Oracle execution plans first: use the default [SQL] www.2cto.com SQL> create or replace procedure SQL _explain (v_ SQL varchar2) without setting output format parameters) 2 is 3 type explain_cursor_type

Welcome to the Oracle community forum and interact with 2 million technical staff & gt; how to implement the paging code in the oracle stored procedure, let's take a look at the Chinese IT lab editor's solutions for you! * ****** Stored Procedure

Since Oracle stored procedures do not return values, all their return values are replaced by the out parameter, and the list is no exception. However, because it is a set, it cannot be used as a general Since Oracle stored procedures do not return

How much performance can be improved by using the Oracle PipeLined method? Recently, Oracle table functions are used. In particular, the nested table data is returned by the table structure. We found that the PIPELINED method is used, it can indeed

Basic PL/SQL entry cursor PL/SQL: a programming Language combined with a Structured Language (Structured Query Language). It is an extension of SQL and supports multiple data types, such as large objects and Collection types, you can use control

Four steps for displaying the cursor in PLSQL this example briefly introduces the locking and consistent read problems involved in the four processes of the cursor processing. explicit cursor processing requires four PL/SQL steps: www.2cto.com 1

In Oracle block programming (begin series), because it does not support the form of select... from... returned result set, results can only be returned in the form of output parameters. Game In Oracle block programming (begin series), because it

Oracle BASICS (5) Advanced pl/SQL (paging process)Compile the paging process to implement the paging process through pl/SQL, and then step by step from simple to difficult. The purpose is to familiarize yourself with the various stored procedures,

Stored Procedure: Package create or replace package emppackage is -- Author: Administrator -- created: 14:02:43 -- Purpose: declares a stored procedure -- Public type declarations type empcursor is ref cursor; -- Public Function and procedure

Raw data:CLASS1 CALLDATE CALLCOUNT1 2005-08-08 401 2005-08-07 62 2005-08-08 773 2005-08-09 3333 2005-08-07 21 After transpose: CALLDATE CallCount1 CallCount2 CallCount3 ------------------------------------------2005-08-09 0 0 336 0 21 The test is as

The use of any language or technology is the final principle. Why should we use stored procedures? Not applicable? Is there anything better than a stored procedure ?, With these series of problems, we can enter the use stage of the stored procedure.1

Java calls the Oracle function to return the result set Time:2010-08-27 10:19:50 Source:Network Author:Unknown Click:Create or replace package my_steel_soft 208 times As -- Type of the dataset returned by the Stored Procedure Type returndataset is

Records in PL/SQL 1. Declaring recordsTable-based recordDeclare one_book books % rowtype;Cursor-based recordDeclare cursor my_books_cur isSelect * From booksWhere author like '% Feuerstein % ';One_sf_book my_books_cur % rowtype;Both of the preceding