Oracle创建存储过程和使用举例前沿技术
oracle 存储过程创建和使用举例
1.创建存储过程
create or replace package pk_1 as //创建包的声明
TYPE cur is ref cursor; //声明一个指针
procedure p1(cr out cur);
end;
/
create or replace package body pk_1 as //创建包体
procedure p1(cr out cur) is
begin
open cr for select STATUS,table_name from dba_tables;
end;
end;
/
2.调用(在sqlplus中):
set serveroutput on //设置允许进行输出操作
/
declare
cc pk_1.cur;
s varchar2(20);
t varchar2(30);
c11 number :=0; //变量c11一定要赋初值,不然将不能正常运算
begin
pk_1.p1(cc);
loop
fetch cc into s,t;
exit when cc%notfound;
c11 := c11 + 1;
dbms_output.put_line('status = ' || s || '; table_name = ' || t);
end loop;
close cc;
dbms_output.put_line(c11);
end;
/
3.对于不是返回一个结果集的存储过程的调用
CREATE OR REPLACE PROCEDURE p1
(
parameter1 in number,
parameter2 out number
) is
value1 INTEGER :=0;
begin
select count(*) into value1 from dba_tables where table_name like '%t%';
parameter2 := value1;
end p1;
sqlplus 中运行procedure
第一种调用方式:
(1)set serveroutput on
declare
v_p_o_succeed varchar2;
begin
pr_jwry_info('a_p_i_date',v_p_o_succeed) ;
dbms_output.put_line(v_p_o_succeed);
end;
第二种调用方式:
(2) var cc varchar(20)
p1(1,:cc)
print cc;
