注意,我说的是不使用游标,在SQLserver过程中就可以承认类似select * from xxx的语句,而在Oracle的过程中却不承认
那谁能给我举个返回多条记录的过程呢?用游标也可以,但是那种一条一条fetch的我知道。
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.
上面就是不用游标,用了记录对象实现下面是一个用游标返回记录集的过程:CREATE OR REPLACE PACKAGE pkg_test AS TYPE myrctype IS REF CURSOR; PROCEDURE get (p_id NUMBER, p_rc OUT myrctype); END pkg_test; /CREATE OR REPLACE PACKAGE BODY pkg_test AS PROCEDURE get (p_id NUMBER, p_rc OUT myrctype) IS sqlstr VARCHAR2 (500); BEGIN IF p_id = 0 THEN OPEN p_rc FOR SELECT ID, NAME, sex, address, postcode, birthday FROM student; ELSE sqlstr := 'select id,name,sex,address,postcode,birthday from student where id=:w_id'; OPEN p_rc FOR sqlstr USING p_id; END IF; END get; END pkg_test; /
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.
AS
TYPE myrctype IS REF CURSOR; PROCEDURE get (p_id NUMBER, p_rc OUT myrctype);
END pkg_test;
/CREATE OR REPLACE PACKAGE BODY pkg_test
AS
PROCEDURE get (p_id NUMBER, p_rc OUT myrctype)
IS
sqlstr VARCHAR2 (500);
BEGIN
IF p_id = 0 THEN
OPEN p_rc FOR
SELECT ID, NAME, sex, address, postcode, birthday
FROM student;
ELSE
sqlstr :=
'select id,name,sex,address,postcode,birthday
from student where id=:w_id';
OPEN p_rc FOR sqlstr USING p_id;
END IF;
END get;
END pkg_test;
/