PL/SQL Cursor Summary: in this tutorial, you will learn about the PL/SQL cursor and its usage. A cursor is a pointer that points to a result of a query. PL/SQL has two types of cursors: implicit cursors and explicit cursors. Implicit cursors...
Summary: in this tutorial, you will learn how to use the PL/SQL cursor with parameters to fetch data based on parameters. An explicit cursor may accept a list of parameters. Each time you open the cursor, you can pass different arguments to the cursor, which results in different result ...
If you are looking for a completePL/SQL tutorial, you are at the right place. This plsqltutorial.com website provides you with a comprehensive PL/SQL tutorial that helps you learn PL/SQL quickly from scratch. What is PL/SQL? PL/SQL stands for Procedural Language extensions to the Structur...
PL/SQL Tutorial (Examples) - page 4 (go to page 1) CURSORS Cursor is a work area in pl/sql which is used by sql server used to store the result of a query. Each column value is pointed using pointer. You can independently manipulate cursor values. A bit about it's working... sup...
将从游标里获取到的数据放到PL/SQL变量或者记录里. 关闭游标. 1) 声明游标: DECLARE CURSOR cursor_name IS 返回多条记录的SELECT语句; 2) 打开游标: OPEN cursor_name; 3) 取数据放到PL/SQL变量或者记录里: FETCH cursor_name INTO record_name;
In the above PL/SQL Block In line no 3; we are creating a cursor ‘id_cur’ which contains the employee id. In line no 7; we are calling the procedure ‘emp_name’, we are passing the ‘id’ as IN parameter and ‘empName’ as OUT parameter. ...
If the query returns more than one tuple, you need to use a cursor. Here is an example: CREATE TABLE T1( e INTEGER, f INTEGER );DELETE FROM T1;INSERT INTO T1 VALUES(1, 3);INSERT INTO T1 VALUES(2, 4);/* Above is plain SQL; below is the PL/SQL program. */DECLARE...
原文参考:http://plsql-tutorial.com/ PL/SQL存储过程 存储过程相当于一个有名字的PL/SQL块,经过第一次编译后再次调用时不需要再次编译 创建格式: CREATE [OR REPLACE]PROCEDUREproc_name [list of parameters] IS Declaration section BEGIN Execution section ...
在本章中,无涯教程将讨论PL/SQL中的记录(Records)。 记录是一种数据结构,可以容纳不同种类的数据项。记录由不同的字段组成,类似于数据库表的一行。 PL/SQL可以处理以下类型的记录- 基于表的记录 (Table-based records) 基于游标的记录(Cursor-based records) ...
The PL/SQL block below uses aREF CURSORto fetch and print employee names from department 20. The cursor is opened dynamically, iterated through using a loop, and closed after processing. DECLARE-- Define a REF CURSOR typeTYPEemp_ref_cursorISREFCURSOR;v_cursor emp_ref_cursor;-- Declare a cur...