FUNCTION Fun_Cs_Sum(v_checkid VARCHAR) RETURN myrctype
AS myrctype CURSOR ;
BEGIN
OPEN myrctype FOR
select * from tabel1;
RETURN myrctype;
END Fun_Cs_Sum;
报错:
PLS-00320: 此表达式的类型说明不完整或格式错误
说是我的c_cursor没有申明
我看过了溺水三千的例子,他是定义函数在一个package里面,在函数外面申明
type myrctype is ref cursor;
难道就不能单独使用一个fuction完成返回游标的操作么??
急需高手解答!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
AS myrctype CURSOR ;
BEGIN
OPEN myrctype FOR
select * from tabel1;
RETURN myrctype;
END Fun_Cs_Sum;
报错:
PLS-00320: 此表达式的类型说明不完整或格式错误
说是我的c_cursor没有申明
我看过了溺水三千的例子,他是定义函数在一个package里面,在函数外面申明
type myrctype is ref cursor;
难道就不能单独使用一个fuction完成返回游标的操作么??
急需高手解答!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
SQL> create table a (id number,name varchar2(50),doctime date);Table created.--插入六条测试数据:
SQL> insert into a values (1,'aaa',to_date('2002-07-01','yyyy-mm-dd'));1 row created.SQL> insert into a values (2,'bbb',to_date('2002-07-02','yyyy-mm-dd'));1 row created.SQL> insert into a values (3,'ccc',to_date('2002-07-03','yyyy-mm-dd'));1 row created.SQL> insert into a values (4,'ddd',to_date('2002-07-04','yyyy-mm-dd'));1 row created.SQL> insert into a values (5,'eee',to_date('2002-07-05','yyyy-mm-dd'));1 row created.SQL> insert into a values (6,'fff',to_date('2002-07-06','yyyy-mm-dd'));1 row created.SQL> commit;Commit complete.--创建两个type
SQL> create or replace type myobjectype as object (x int,y date,z varchar2(50));
2 /Type created.SQL> create or replace type mytabletype as table of myobjectype
2 /Type created.--创建可以返回纪录集的函数(不传入表名参数)
SQL> create or replace function testrerecordnotabname (tableid in number)
2 return mytabletype
3 as
4 l_data mytabletype :=mytabletype();
5 begin
6 for i in (select * from a where id>=tableid) loop
7 l_data.extend;
8 l_data(l_data.count) := myobjectype(i.id,i.doctime,i.name);
9 exit when i.id = 62;
10 end loop;
11 return l_data;
12 end;
13 /Function created.SQL> commit;Commit complete.--创建可以返回纪录集的函数(可以传入表名参数)
SQL> create or replace function testrerecordtabname (tablename in varchar2,tableid in number)
2 return mytabletype
3 as
4 l_data mytabletype :=mytabletype();
5 strsql varchar2(50);
6 type v_cursor is ref cursor;
7 v_tempcursor v_cursor;
8 i1 number;
9 i2 varchar2(50);
10 i3 date;
11 begin
12 strsql := 'select * from ' || tablename || ' where id>=' || tableid;
13 open v_tempcursor for strsql;
14 loop
15 fetch v_tempcursor into i1,i2,i3;
16 l_data.extend;
17 l_data(l_data.count) := myobjectype(i1,i3,i2);
18 exit when v_tempcursor%NOTFOUND;
19 end loop;
20 return l_data;
21 end;
22 /Function created.SQL> commit;Commit complete.--测试不传表名参数的function(testrerecorenotabname)
SQL> set serveroutput on
SQL> declare
2 testre mytabletype :=mytabletype();
3 i number :=0;
4 begin
5 testre := testrerecordnotabname(1);
6 loop
7 i := i+1;
8 dbms_output.put_line(';' || testre(i).x || ';' || testre(i).y || ';' || testre(i).z || ';');
9 exit when i = testre.count;
10 end loop;
11 end;
12 /
;1;01-7?? -02;aaa;
;2;02-7?? -02;bbb;
;3;03-7?? -02;ccc;
;4;04-7?? -02;ddd;
;5;05-7?? -02;eee;
;6;06-7?? -02;fff;PL/SQL procedure successfully completed.--测试传表名参数的function(testrerecoretabname)
SQL> set serveroutput on
SQL> declare
2 testre mytabletype :=mytabletype();
3 i number :=0;
4 begin
5 testre := testrerecordtabname('a',1);
6 loop
7 i := i+1;
8 dbms_output.put_line(';' || testre(i).x || ';' || testre(i).y || ';' || testre(i).z || ';');
9 exit when i = testre.count;
10 end loop;
11 end;
12 /
;1;01-7?? -02;aaa;
;2;02-7?? -02;bbb;
;3;03-7?? -02;ccc;
;4;04-7?? -02;ddd;
;5;05-7?? -02;eee;
;6;06-7?? -02;fff;
;6;06-7?? -02;fff;PL/SQL procedure successfully completed.
FUNCTION Fun_Cs_Sum(v_checkid VARCHAR) RETURN myrctype
你返回的类型还没有定义过,或者说你返回的类型是在函数体中定义的,ORACLE当然无法识别这样的类型.你可以不把函数写在包体中,但是如果要返回一个纪录集类型的变量,必须先定义REF CURSOR类型的TYPE.