试版本:oracle 8.16企业版
参考:
http://download-west.oracle.com/otndoc/oracle9i/901_doc/appdev.901/a89856/06_ora.htm#1614
http://download-west.oracle.com/otndoc/oracle9i/901_doc/appdev.901/a89856/11_dynam.htm#7875
相关问题:
http://www.csdn.net/expert/Topic/306/306300.shtm
http://www.csdn.net/expert/Topic/336/336154.shtm
...
测试过程:
1、建立测试表
CREATE TABLE student
(
id NUMBER,
name VARCHAR2(30),
sex VARCHAR2(10),
address VARCHAR2(100),
postcode VARCHAR2(10),
birthday DATE,
photo LONG RAW
)
/
2、建立带ref cursor定义的包和包体及函数:
CREATE OR REPLACE
package pkg_test as
/* 定义ref cursor类型
不加return类型,为弱类型,允许动态sql查询,
否则为强类型,无法使用动态sql查询;
*/
type myrctype is ref cursor;
--函数申明
function get(intID number) return myrctype;
end pkg_test;
/
CREATE OR REPLACE
package body pkg_test as
--函数体
function get(intID number) return myrctype is
rc myrctype; --定义ref cursor变量
sqlstr varchar2(500);
begin
if intID=0 then
--静态测试,直接用select语句直接返回结果
open rc for select id,name,sex,address,postcode,birthday from student;
else
--动态sql赋值,用:w_id来申明该变量从外部获得
sqlstr := 'select id,name,sex,address,postcode,birthday from student where id=:w_id';
--动态测试,用sqlstr字符串返回结果,用using关键词传递参数
open rc for sqlstr using intid;
end if;
return rc;
end get;
end pkg_test;
/
3、用pl/sql块进行测试:
declare
w_rc pkg_test.myrctype; --定义ref cursor型变量
--定义临时变量,用于显示结果
w_id student.id%type;
w_name student.name%type;
w_sex student.sex%type;
w_address student.address%type;
w_postcode student.postcode%type;
w_birthday student.birthday%type;
begin
--调用函数,获得记录集
w_rc := pkg_test.get(1);
--fetch结果并显示
fetch w_rc into w_id,w_name,w_sex,w_address,w_postcode,w_birthday;
dbms_output.put_line(w_name);
end;
4、测试结果:
通过。
在上述的online document中有相当多的内容,包括怎样在pro*c传递动态参数给存储过程、ref cusor的使用限制、open cursor for的4中不同方法等等。如需要的话请大家参考原文,恕我不一一列举。
参考:
http://download-west.oracle.com/otndoc/oracle9i/901_doc/appdev.901/a89856/06_ora.htm#1614
http://download-west.oracle.com/otndoc/oracle9i/901_doc/appdev.901/a89856/11_dynam.htm#7875
相关问题:
http://www.csdn.net/expert/Topic/306/306300.shtm
http://www.csdn.net/expert/Topic/336/336154.shtm
...
测试过程:
1、建立测试表
CREATE TABLE student
(
id NUMBER,
name VARCHAR2(30),
sex VARCHAR2(10),
address VARCHAR2(100),
postcode VARCHAR2(10),
birthday DATE,
photo LONG RAW
)
/
2、建立带ref cursor定义的包和包体及函数:
CREATE OR REPLACE
package pkg_test as
/* 定义ref cursor类型
不加return类型,为弱类型,允许动态sql查询,
否则为强类型,无法使用动态sql查询;
*/
type myrctype is ref cursor;
--函数申明
function get(intID number) return myrctype;
end pkg_test;
/
CREATE OR REPLACE
package body pkg_test as
--函数体
function get(intID number) return myrctype is
rc myrctype; --定义ref cursor变量
sqlstr varchar2(500);
begin
if intID=0 then
--静态测试,直接用select语句直接返回结果
open rc for select id,name,sex,address,postcode,birthday from student;
else
--动态sql赋值,用:w_id来申明该变量从外部获得
sqlstr := 'select id,name,sex,address,postcode,birthday from student where id=:w_id';
--动态测试,用sqlstr字符串返回结果,用using关键词传递参数
open rc for sqlstr using intid;
end if;
return rc;
end get;
end pkg_test;
/
3、用pl/sql块进行测试:
declare
w_rc pkg_test.myrctype; --定义ref cursor型变量
--定义临时变量,用于显示结果
w_id student.id%type;
w_name student.name%type;
w_sex student.sex%type;
w_address student.address%type;
w_postcode student.postcode%type;
w_birthday student.birthday%type;
begin
--调用函数,获得记录集
w_rc := pkg_test.get(1);
--fetch结果并显示
fetch w_rc into w_id,w_name,w_sex,w_address,w_postcode,w_birthday;
dbms_output.put_line(w_name);
end;
4、测试结果:
通过。
在上述的online document中有相当多的内容,包括怎样在pro*c传递动态参数给存储过程、ref cusor的使用限制、open cursor for的4中不同方法等等。如需要的话请大家参考原文,恕我不一一列举。
http://www.vbip.com/books/1861001789/chapter_1789_11.asp
http://www.csdn.net/Expert/TopicView2.asp?id=338638&datebasetype=now