oracle数据库sql语句之存储过程讲解

--创建存储过程

set serveroutput on;

--显示错误

show error;

--根据部门编号，输出该部门人数和平均工资

create or replace procedure pro_m(dno in emp.deptno%type)

as

num number(2);

avgsal emp.sal%type;

begin

select count(*),avg(sal) into num, avgsal from emp where deptno=dno;

dbms_output.put_line(num||' '||avgsal);

end;

/

--执行

exec pro_m(10);

--out 返回数据

create or replace procedure pro_m(id in emp.deptno%type, num out number, avgsal out emp.sal%type)

as

begin

select count(*),avg(sal) into num, avgsal from emp where deptno=id;

end;

/

--执行

declare

num number(2);

avgsal emp.sal%type;

begin

pro_m(10, num, avgsal);

dbms_output.put_line(num||' '||avgsal);

end;

/