存储过程入门

--建立测试数据:
create table BOOK(编号 number(10),书名 varchar2(20),价格 varchar2(20))

insert into BOOK values(100,'aa','88.77')

select * from BOOK


--建立存储过程:
create or replace procedure query_BOOK(name IN OUT NUMBER,MY_BOOK OUT VARCHAR2,MY_BOOK2 OUT VARCHAR2) is
begin
select 编号 ,书名,价格 INTO name,MY_BOOK,MY_BOOK2 from BOOK where 编号=name;  
end query_BOOK;



--调用存储过程:
declare v_name number(10);
 v_my_book varchar2(50);
 v_my_book2 varchar2(20);
begin
  v_name := 100;
  query_BOOK(v_name,v_my_book,v_my_book2); --调用存储过程
  dbms_output.put_line('v_name is: '||v_name);
  dbms_output.put_line('v_my_book is: '||v_my_book);  
  dbms_output.put_line('v_my_book2 is: '||v_my_book2);  
exception
  when others then
  dbms_output.put_line(sqlerrm);
end;