初学ORACLE,对返回数据集的存储过程不了解,听说要用游标,试过多次都不行,求教!
比如一个最简单的存储过程在SQL中如下在ORACLE中怎么写?:
create PROCEDURE test
@p1 int
as
begin
select * from flow where id=@p1
endGO
比如一个最简单的存储过程在SQL中如下在ORACLE中怎么写?:
create PROCEDURE test
@p1 int
as
begin
select * from flow where id=@p1
endGO
2 begin
3 open mycursor for select * from emp;
4 end test;
5 /Procedure created.SQL> var c1 sys_refcursor;
Usage: VAR[IABLE] [ <variable> [ NUMBER | CHAR | CHAR (n [CHAR|BYTE]) |
VARCHAR2 (n [CHAR|BYTE]) | NCHAR | NCHAR (n) |
NVARCHAR2 (n) | CLOB | NCLOB | REFCURSOR |
BINARY_FLOAT | BINARY_DOUBLE ] ]SQL> var c1 refcursorSQL> exec test(:c1);PL/SQL procedure successfully completed.SQL> print :c1; EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- ------------ ---------- ---------- ----------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 1014 rows selected.
p1 NUMBER
as
begin
select * from flow where id=p1;
end test;